user capacity of rate constrained wireless networks



User Capacity of Rate-Constrained Wireless Networks User Capacity of Rate-Constrained Wireless Networks Новинка

User Capacity of Rate-Constrained Wireless Networks

Wireless communications has been a topic of study since the 1960's. Two fundamental aspects of wireless communications make it challenging and interesting. First of all, the time-varying nature of the underlying channel due to small-scale and large-scale fading is one of the most significant problems in designing wireless communication systems. Secondly, unlike wired communications in which each transmitter-receiver pair is isolated and can be thought of as a point-to-point link, wireless communication users suffer from interference made by all other active users sharing the same transmission medium. A lot of effort has been done to improve the performance of wireless communication systems in the presence of fading and interference and this field is still attracting many researchers.
Cooperative communications for energy constrained wireless networks Cooperative communications for energy constrained wireless networks Новинка

Cooperative communications for energy constrained wireless networks

Cooperative communications is a new communication archetype that enables different users or nodes in a wireless network to share their resources and antennas for distributed transmission/reception. This book identifies a common problem of unbalanced energy consumption in multi-hop cooperative network and then analyzes and develops different proposed solutions and finally presents a cross layer framework for energy efficient cooperative communications in multi-hop wireless networks with a goal to provide significant improvements in average symbol/packet error rate, and the throughput with respect to other transmission parameters.
Power management algorithms for wireless sensor networks Power management algorithms for wireless sensor networks Новинка

Power management algorithms for wireless sensor networks

Wireless Sensor Networks (WSN) comprise of highly constrained nodes in terms of processing power, memory, size and most importantly, power is supplied by batteries that are not rechargeable or replaceable. In addition, the nodes have to be self configurable and autonomous thus requiring considerable intelligence. To this end, managing the limited resources of the nodes and the development of low foot print artificial intelligence based agents have been major areas of research. Power Management Algorithms for Wireless Sensor Networks is an in-depth study of artificial intelligence based techniques applicable to these highly constrained network nodes. The algorithms focus on two main areas of power wastage in WSN namely, the transceiver and media access. The author explores a number of environments in which the nodes operate and using sound theory for proof of optimality in combination with empirical work, develop agents that converge on policies that are optimal and able to operate in these highly constrained networks. This book is a major resource for those working in the field of resource management for intelligent autonomous self configuring low power sensor networks.
Constrained Capacity Density Optimization in Mobile Cellular Networks Constrained Capacity Density Optimization in Mobile Cellular Networks Новинка

Constrained Capacity Density Optimization in Mobile Cellular Networks

Downlink performance of cellular networks is mainly limited by Intercell Interference (ICI). A promising concept for ICI mitigation is Fractional Frequency Reuse (FFR), which effectively allows to trade off overall performance against enhanced cell-edge performance. In this work, a novel FFR scheme is proposed. It assigns a given user to a frequency sub band depending on the achievable capacity density (bit/s/m?). An optimization problem is formulated, which aims at maximizing average per-user throughput while maintaining a minimum performance at cell-edge. Simulations are carried out for omnidirectional and sectorized cellular scenarios, using both 2-dimensional and 3-dimensional antenna radiation patterns. The simulation results show that the proposed scheme outperforms conventional reuse-1- and reuse-3 schemes in terms of average- and cell-edge performance.
Wireless Sensor Network Wireless Sensor Network Новинка

Wireless Sensor Network

The emerging wireless technologies target a comprehensive range of new applications that the legacy wireless networks cannot support. On the contrary, low rate, low power data collection applications have been anticipated to have a crucial impact on our understanding of the physical world. Simplified technological versions of wireless networks are being worked upon to support these low rate applications in order to meet the stringent requirements of low energy consumption. In wireless networks, Medium Access Control (MAC) sublayer plays a vital role in satisfying the requirement of varying Quality of Service (QoS). Many MAC solutions have been proposed for these networks. In this book, the feasibility of existing solutions for MAC sublayer are reviewed and analyzed for Wireless Sensor Networks. Then the analysis of MAC protocol for recently emerged low rate, low power IEEE 802.15.4 standard is presented. The impact of packet size and number of nodes on the throughput, success probability and average delay is analyzed with Markov chain and OPNET simulation.
Prevention of Flooding Attack in Wireless Sensor Network Prevention of Flooding Attack in Wireless Sensor Network Новинка

Prevention of Flooding Attack in Wireless Sensor Network

The basic work of sensor system is to monitor required event and communicate it to base station and hence to the end user. Wireless Sensor Networks were first developed to use at places where wired sensors networks cannot reach for example: latest Tsunami in Japan, where environment is polluted with nuclear radiations. In order to get latest happenings in such an environment wireless sensors can be deployed randomly and information can be fetched through them by the user sitting at a very far and safe distance. As the cost of installation and maintenance of wired sensor networks is quite high as compared to wireless sensor networks, wireless sensor networks prove themselves as an attractive alternative as compared to wired sensor networks. With the passage of time, sensor nodes find their way to household and day to day work also. Now days, they are used as health monitoring systems, agriculture, structural engineering, real time monitoring in civil engineering, human tracking etc. As in case of any network, security becomes an important issue in wireless sensor networks too.
Wireless Sensor Networks Wireless Sensor Networks Новинка

Wireless Sensor Networks

The most emerging technology of sensor networks is the use of them in the medical care to save patients lives, create valuable data for medical research, and cut the cost of medical services. Recently, body sensor networks are used for remote health monitoring and patient care. This book, therefore, attempts to provide of unified overview of broader field of Wireless Sensor Networks in healthcare applications. The organization of the book starts with the background of wireless sensor networks, and then completes description of the patient health metrics: heart rate and blood oxygen saturation (SpO2) by using body sensor networks for better treatment. In this book the idea of architecture of wireless sensor networks is presented for the monitoring of patients different health metrics: heart rate and blood oxygen saturation levels for treatment at home. The main focus of book is to examine, monitor and analyze patient heart beat activities and oxygen saturation level in order to meet better treatment and health care. In addition this book provides countermeasures of different security attacks related to data gathering from different sensors.
Survivability of an Integrated Fiber Wireless Network Survivability of an Integrated Fiber Wireless Network Новинка

Survivability of an Integrated Fiber Wireless Network

In past few years there is a huge development in the field of broadband access technologies. Now a days user demands a network which provides high data rate with better flexibility at relatively lower cost. The FiWi network is one the such networks which provides broadband services with high bandwidth and flexibility at low cost. The main parameters considered under FiWi networks are Survivability, ONU Placement and Energy Saving. The present work focuses on survivability of an FiWi network and also presents an efficient solution for such problem.
Even the vehicles can talk using VANETMOBISIM Even the vehicles can talk using VANETMOBISIM Новинка

Even the vehicles can talk using VANETMOBISIM

Wireless communication technologies have now greatly impact our daily lives. From indoor wireless LANs to outdoor cellular mobile networks, wireless technologies have benefited billions of users around the globe. The era of vehicular ad hoc networks (VANETs) is now evolving, gaining attention and momentum. Researchers and developers have built VANET simulation software to allow the study and evaluation of various media access, routing, and emergency warning protocols. The Vehicular Ad Hoc Networks Mobility Simulator (VanetMobiSim) is a set of extensions to CanuMobiSim, a framework for user mobility modeling. This book presents a comprehensive study VANET simulation software and their components. In particular, I contrast their software characteristics, graphical user interface (GUI), popularity, ease of use, input requirements, output visualization capability, accuracy of simulation.
Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks Новинка

Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks

Mobility Models for Next Generation Wireless Networks: Ad Hoc, Vehicular and Mesh Networks provides the reader with an overview of mobility modelling, encompassing both theoretical and practical aspects related to the challenging mobility modelling task. It also: Provides up-to-date coverage of mobility models for next generation wireless networks Offers an in-depth discussion of the most representative mobility models for major next generation wireless network application scenarios, including WLAN/mesh networks, vehicular networks, wireless sensor networks, and opportunistic networks Demonstrates the practices for designing effective protocol/applications for next generation wireless networks Includes case studies showcasing the importance of properly understanding fundamental mobility model properties in wireless network performance evaluation
Congestion Control: Problem and Solution for Wireless Sensor Networks Congestion Control: Problem and Solution for Wireless Sensor Networks Новинка

Congestion Control: Problem and Solution for Wireless Sensor Networks

Congestion affects the performance of a wireless sensor network in two aspects: increased data loss and reduced lifetime. All data generated in wireless sensor networks may not be alike; some data may be more important than others and hence may have different delivery requirements. As deployment sizes and data rates grow, congestion arises as a major problem in these networks. This congestion leads to indiscriminate dropping of data, i.e. data of high importance might be dropped while others of less importance are delivered. In this Book, I take a look at data delivery issues in the presence of Congestion Aware Routing Protocol designed earlier for wireless sensor networks. I propose a new data prioritization and a priority aware routing protocol - Advanced Congestion Aware Routing (ACAR) which slacking the packet dropping rate of data packets.
Energy & Time Performance Metrics in Wireless Sensor Network Energy & Time Performance Metrics in Wireless Sensor Network Новинка

Energy & Time Performance Metrics in Wireless Sensor Network

Wireless sensor networks (WSNs) represent a new computing class consisting of large numbers of resource-constrained nodes which are often embedded in their operating environments, distributed over wide geographic areas, or located in remote and largely inaccessible regions also faces the security problem. Lots of security solutions are available for wired networks which can be used for wireless networks, but because of low form factor properties of wireless nodes which are also mobile, it is infeasible to deploy the complex security solutions for wireless networks. In WSNs, challenges such as wireless nature, low battery power and mobility are prime reasons why we are not able to deploy complex security solutions. Hence it is important to study, design and analyze security solutions for this kind of networks. Therefore, the concept of Cryptography Assistant is introduced, which is assumed to be highly powered device compared to sensor node. The crypto assistant node is capable of implementing high end cryptography algorithm. This work mainly focused on energy and time tradeoff of encryption algorithms and files communication
Performance evaluation of wireless Communication Networks Performance evaluation of wireless Communication Networks Новинка

Performance evaluation of wireless Communication Networks

Queueing theory is an essential concept to review in light of tactical wireless communications and networks. Wireless communication systems, in particular frequency spectrum, are expensive and it is imparative that we make optimal use of frequency spectrum. Therefore the performance analysis is an important factor in the designing phase of the networks. This book addresses the performance evaluation and enhancement of wireless networks, examining the channel assignment problem of cellular networks.
Wireless Sensor Networks Wireless Sensor Networks Новинка

Wireless Sensor Networks

Wireless Sensor Networks is an emerging technology in the field of Information and Communication Technology.The emergence of compact, low-power, wireless communication sensors and actuators in the Technology supporting the ongoing miniaturization of processing and storage, allows for entirely new kind of embedded system. Wireless Sensor Networks involve small, energy-efficient devices, hardware/software co-design and networking support. The need of the hour is to make these networks energy-efficient. The book would be useful for the researchers as well as practitioners working in the field of Computer Networks.
Resource Management Schemes in Wireless Networks Resource Management Schemes in Wireless Networks Новинка

Resource Management Schemes in Wireless Networks

Over recent years, wireless communication systems have been experiencing a dramatic and continuous growth in the number of subscribers, thus placing extra demands on system capacity. At the same time, keeping Quality of Service (QoS) at an acceptable level is a critical concern and a challenge to the wireless network designer. In this sense, performance analysis must be the first step in designing or improving a network. A good modelling and analysis of the wireless cellular networks will lead to a high level of QoS. In this book, different analytical models of various handoff schemes and resource re-allocation in homogeneous and heterogeneous wireless cellular networks are developed and investigated. The sustained increase in users and the request for advanced services are some of the key motivations for considering the designing of Hierarchical Cellular Networks (HCN). In HCN, calls blocked in a microcell flow over to an overlay macrocell. Microcells can be replaced by WLANs as this can provide high bandwidth and its users have limited mobility features. Efficient sharing of resources between wireless cellular networks and WLANs will improve the capacity as well as QoS metrics.
Energy Efficient Management MAC Energy Efficient Management MAC Новинка

Energy Efficient Management MAC

This book will develop the management skills in the field of Computer Network. That is the optimization resource usage with minimal input. The book contains the mainly on Wireless Sensor Networks (WSNs) as widely considered as one of the most important technologies for the twenty-first century. WSNs employ thousands of small sensors that communicate between themselves in a distributed manner using Medium Access Control (MAC) protocols. Energy required for wireless sensor is obtained from non-rechargeable energy sources. Due to their small size, wireless sensors are highly constrained in terms of battery energy.
Sportguard SP-06 5.3K Wireless Adjustable Heart Rate Belt - Black (1 x CR2032) Sportguard SP-06 5.3K Wireless Adjustable Heart Rate Belt - Black (1 x CR2032) Новинка

Sportguard SP-06 5.3K Wireless Adjustable Heart Rate Belt - Black (1 x CR2032)

Color Black Brand Sportguard Model SP-06 Material ABS Quantity 1 Piece Shade Of Color Black Display N/A Control Mode 5.3K wireless Target Position Chest Physical therapy function Heart rate monitor Power Supply Others1 x CR2032 included Plug Specifications No Certification CE Other Features Efficient wireless signal launch distance (100~130mmm). High and new environmental protection material.Highly efficient and stable. The 30m depth waterproof. High capacity imported CR2032 lithium electricity. Auto power -off. High anti-interference. Suitable for a variety of 5.3K heart accept equipment (5.3K heart rate table sports equipment heart rate receiver a stationary bike treadmill... etc.). Suitable for POLAR prodcts. Packing List 1 x 5.3K heart rate belt 1 x English user manual
Resource Allocation and Management in Computer Networks Resource Allocation and Management in Computer Networks Новинка

Resource Allocation and Management in Computer Networks

Resource Allocation and Management (RAM) in Computer Networks has been an active research topic for decades. The complexity of the problem has increased for many reasons, such as the available mix of many different networks and scarce network resources along with an exponential increase in user demands and types of applications. An additional problem in wireless networks is that the frequency spectrum is fixed while the user demands are growing exponentially. Therefore, the problem is how to use the limited resources over the diverse networks efficiently to meet application specific requirements, such as throughput, delay, and delay jitter. In this dissertation, our focus is on three main research areas over three different networks - Part I: Congestion control in Datacenter Networks (DCNs), Part II: Resource allocation and management in IEEE 802.16 WiMAX Networks, and Part III: Resource management in Next Generation Wireless Networks (NGWNs). These three parts reflect the growing complexity of the problem space and the sequence of latest developments in the networking industry.
Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology Новинка

Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology

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With 40% new material the new edition of Advanced Wireless Networks provides a comprehensive representation of the key issues in 4G wireless networks. Focussing on cognitive, cooperative and opportunistic paradigms to provide further increase in network efficiency, the book explores and addresses issues in wireless internet, mobile cellular and WLAN, as well as sensor, ad hoc, bio-inspired, active and cognitive networks. It examines the problem of cross-layer optimisation and network information theory as well as adaptability and reconfigurability in wireless networks. This book is an integral description of future wireless networks and the interconnection between their elements. The information is presented in a logical order within each chapter making it ideal for all levels of reader including researchers involved in modelling and analysis of future networks as well as engineers working in the area. Each chapter starts with introductory material and gradually includes more sophisticated models and mathematical tools concluding with a comprehensive list of references. Fully updated throughout with five new chapters on Opportunistic Communications; Relaying and Mesh Networks; Topology Control; Network Optimization; and Cognitive Radio Resource Management Unifies the latest research on cognitive, cooperative and opportunistic paradigms in wireless communications Provides efficient analytical tools for network analysis Discusses security issues, an essential element of working with wireless networks Supports advanced university and training courses in the field Companion website containing extra appendix on Queuing theory
Power/Rate Control in CDMA Based Cognitive Radio Network Power/Rate Control in CDMA Based Cognitive Radio Network Новинка

Power/Rate Control in CDMA Based Cognitive Radio Network

This is a work intended to illustrate a power/rate control and effect of multiple access interference on Cognitive Radio Network. Since one of the major challenges in design of future wireless networks is to find suitable spectrum bands, Cognitive Radio has become a solution. This feature should be used without hampering the signal transmission of the licensed user and power/rate control can be an efficient technique regarding this issue. Basic concept of Cognitive Radio along with a power/rate control feature is tried to describe in this book.
Design and Evaluation of Transport Protocols Design and Evaluation of Transport Protocols Новинка

Design and Evaluation of Transport Protocols

Revision with unchanged content. The Advent of Mobile and Wireless Ad Hoc Networks arises empowered by small and powerful hardware in every-day life scenarios. Vehicular networks represent the most promising scenario for an efficient market introduction. The distribution of information in vehicular networks like safety messages requires reliable, but efficient communication and distribution of messages. This work evaluates different scenrios of wireless and mobile communications and designs transport protocols for wireless and mobile networks – op­ti­mized for the specific network types like vehicular networks by con­sidering the characteristc of these environments, comprising characteristics of the wireless transmission medium wireless LAN 802.11b. The work has been partially conducted in the ‘Network on Wheels (NoW)’ project that was partially funded by the German Ministry of Education and Research. The work provides protocol proposals and guidelines for future ad hoc protocol design.
Securing WSN with Lightweight Resource-Efficient Schemes Securing WSN with Lightweight Resource-Efficient Schemes Новинка

Securing WSN with Lightweight Resource-Efficient Schemes

Security in wireless sensor network (WSN) encompasses a great number of challenges; ranging from the nature of wireless communications, constrained resources of the sensors, unknown topologies of the deployed networks, unattended and accessible environment where sensors might be susceptible to physical attacks, dense and large networks, etc. In general, the research areas on security in WSN could be categorized as; (a) Key Management (b) Secure routing and transport, (c) Security services, (deployment strategy, security framework, etc.), (d) Intrusion detection system A single mechanism cannot solve all the issues. Keeping this point in mind, this book deals with security services and secure routing [areas (b) and (c)] in WSN. It analyzes the impact of security mechanisms on the resource efficiency in wireless sensor network.
High Capacity CDMA and Collaborative Techniques High Capacity CDMA and Collaborative Techniques Новинка

High Capacity CDMA and Collaborative Techniques

The author analyses problems and challenges faced by state of the art wireless multiple access technologies and presents series of new approaches and methodologies to address some of the most critical problems limiting the capacity and reliability of multi-user CDMA wireless communication. The introductory chapter is dedicated specifically to provide a thorough review of key concepts of multi-user wireless communications and motivations that fuelled the research work in subsequent chapters. The work cover important research areas such as multi-user detection, adaptive interference estimation and cancellation and how the new techniques presented here can substantially increase the capacity of CDMA. Review of Cooperative Communication, how it enhances the link performance by providing diversity without use of antenna arrays, its limitations and ways to achieve maximum performance in multi-user settings are presented. Finally a novel approach of collaborative spreading that is designed to substantially increase the capacity of CDMA without compromising the detection performance and complexity even under very high user overloading conditions is investigated.
Wireless Networks: A Mobile Broadband Infrastructure Wireless Networks: A Mobile Broadband Infrastructure Новинка

Wireless Networks: A Mobile Broadband Infrastructure

The rapid deployment and self organization have turned ad hoc networks into a viable solution to a diverse domain of applications. Ad hoc networking will play a major role in the Any Where Any Time generation of future wireless communications. However, existing ad hoc networks are not yet ready for such a transition. In this context, the scalability and broadband capabilities represent major challenges that demand immediate but serious attention. The infrastructureless organization of ad hoc networks takes a big toll on the performance and related quality features. While current infrastructured ad hoc networks perform more efficiently than those without infrastructure, they still have major problems and cannot ensure a safe leap to the next generation of wireless communications. In this book, major challenges imposed by future ad hoc networks are investigated and a two-layer broadband infrastructure is proposed. The design of the proposed infrastructure is motivated by the role of ad hoc networks in the next generation of wireless systems and the expected demands on high capacity communications.
Wireless-Powered Communication Networks Wireless-Powered Communication Networks Новинка

Wireless-Powered Communication Networks

Learn the fundamentals of architecture design, protocol optimization, and application development for wireless-powered communication networks with this authoritative guide. Readers will gain a detailed understanding of the issues surrounding architecture and protocol design, with key topics covered including relay-based energy harvesting systems, multiple-antenna systems for simultaneous wireless information and power transfer (SWIPT), performance modeling and analysis, and ambient wireless energy harvesting based cellular systems. Current applications of energy harvesting and transfer in different wireless networking scenarios are discussed, aiding the understanding of practical system development and implementation issues from an engineering perspective. The first book to provide a unified view of energy harvesting and wireless power transfer networks from a communications perspective, this is an essential text for researchers working on wireless communication networks and wireless systems, RF engineers, and wireless application developers.
Coexistence Study on Low Rate Wireless Personal Area Networks Coexistence Study on Low Rate Wireless Personal Area Networks Новинка

Coexistence Study on Low Rate Wireless Personal Area Networks

This book studies the coexistence performance of low rate wireless personal area networks (LR-WPANs) such as Bluetooth (IEEE 802.15.1) and ZigBee (IEEE 802.15.4). The main goal of this book is to describe the performance of LR-WPAN under erroneous environments due to the interference and/or error-prone wireless channel property. Wireless medium is error-prone. Especially both LR-WPAN standards define 2.4 GHz industrial scientific medical (ISM) band as a physical layer, therefore, there are many interference sources such as IEEE 802.11 WLAN. Hence, the performance analysis in erroneous environments is required. In this book, performances of coexisting wireless networks are analyzed by means of mathematical modelings and simulations. Packet error rate (PER), throughput, and transmission delay are used as performance measures. The result of this book can suggest the coexistence criteria among ZigBee, WLAN, and Bluetooth. It will be useful to design and implement a network using ZigBee, WLAN, and Bluetooth altogether.
Design and Experimentation of Rate Adaptation for IEEE 802.11n WLANs Design and Experimentation of Rate Adaptation for IEEE 802.11n WLANs Новинка

Design and Experimentation of Rate Adaptation for IEEE 802.11n WLANs

Wireless Local Area Networks (WLANs) have become increasingly popular due to the recent availability of affordable devices providing multiple and high rate capabilities. Optimizing the performance of WLANs for emerging new Internet applications that demand High Throughput (HT) is an important and a highly challenging issue. In this book, we present a new practical Rate Adaptation (RA) algorithm, termed L3S, which extends legacy schemes with new MIMO features suitable for the forthcoming 802.11n high-speed MIMO-based WLAN products. We implement our rate adaptation algorithm in real hardware devices and evaluate its performance and compare it to the existing rate control mechanisms. Our experiments demonstrate that our scheme allows the current 802.11n devices to have a greater adaptability to a variety of wireless channel conditions and performs better than state-of-the-art rate adaptation algorithms.
Wireless Network Design Wireless Network Design Новинка

Wireless Network Design

Future wireless networks will be driven by various ubiquitous broadband services such as portable telephony, mobile Internet, Voice over IP, and IPTV. To accommodate a single cell''s large number of users, each running a different application on its mobile terminal, optimization of limited resources is critical. The transmission path from the base station to the mobile terminal is the downlink. In the downlink, feedback of mobile user''s condition to the base-station is essential for optimal allocation of limited resources, however, it is a system design challenge. Mobile user''s condition is comprised of its wireless channel condition, among multiple other such system metrics. This book explores optimal resource allocation, with partial knowledge of a mobile user''s condition at the base station. It shows the right feedback information is application dependent. The set of techniques explored improve the performance and bandwidth efficiency of future wireless systems. The work should be very useful to industry professionals in wireless networks, academicians - professors or graduate students; or anyone else with an interest in wireless communications.
Cross-Layer Designs for Multi-Hop Wireless Networks Cross-Layer Designs for Multi-Hop Wireless Networks Новинка

Cross-Layer Designs for Multi-Hop Wireless Networks

Multi-hop wireless networks are usually defined as a collection of nodes equipped with radio transmitters, which not only have the capability to communicate each other in a multi-hop fashion, but also to route each others' data packets. The distributed nature of such networks makes them suitable for a variety of applications where there are no assumed reliable central entities, or controllers, and may significantly improve the scalability issues of conventional single-hop wireless networks. This book mainly investigates two aspects of the research issues related to the efficient multi-hop wireless networks designs, namely: network protocols and network management, both in cross-layer design paradigms to ensure the notion of service quality, i.e., quality-of-service (QoS) in wireless mesh networks (WMNs) for backhaul applications and quality-of-information (QoI) in wireless sensor networks (WSNs) for sensing tasks. This book uses different network settings as illustrative examples to demonstrate the efficiency and correctness of the proposed algorithms, methodologies, protocols, and models with extensive simulation results, but they also have wide applicability to other networks.
Characterizing User Mobility In Wireless Networks Characterizing User Mobility In Wireless Networks Новинка

Characterizing User Mobility In Wireless Networks

Node mobility is a key factor in the design and performance evaluation of mobile networks and their protocols and mobility characterization has attracted considerable attention from the networking research community. In this work we have explored the spatial behavior of human mobility through through the analysis of a variety of mobility traces collected in different network environments. As a result, we identify characteristics exhibited by human mobility that, to the best of our knowledge, have not yet been revealed in previous studies. We used a number of real traces that record user mobility in wireless LANs as well as GPS traces.
Optimizing energy consumption of wireless access networks Optimizing energy consumption of wireless access networks Новинка

Optimizing energy consumption of wireless access networks

Data rates in wireless networks grow approximately by a factor of 10 every 5 years and this together with the increase in the number of users, results in a doubling of the energy requirements of the wireless networks infrastructure every 4 to 5 years. This book considers minimizing the energy consumption of wireless access networks through switching on and off and adjusting the transmitted power of wireless network devices according to realistic traffic patterns. Author propose an optimization approach based on the development of integer linear programming (ILP) models that minimize the energy consumption of the whole network, whilst ensuring sufficient area coverage and capacity for guaranteed quality of service. Obtained results show that remarkable energy savings of up to 50% can be achieved by the proposed network management strategies. To cope with the problem of high computational time characteristics of some ILP models, heuristic algorithms based on greedy methods and local search have been developed. Each of the heuristic algorithms ensures the minimization of network energy consumption within a reasonable amount of time, making them applicable for practical implementation.
On Designing Energy Conserving WSN On Designing Energy Conserving WSN Новинка

On Designing Energy Conserving WSN

Sensors are low cost tiny devices with limited storage, computational capability and power. They can be deployed in large scale for performing both military and civilian tasks. The main concern in Wireless Sensor Networks is how to utilize the limited energy resources. The performance of Wireless Sensor Networks strongly depends on their lifetime. As a result, Dynamic Power Management approaches with the purpose of reduction of energy consumption in sensor nodes, after deployment and designing of the network, have drawn attentions of many research studies. The neural-networks algorithms can lead to lower communication costs and energy conservation. All these characteristics show great analogy and compatibility between wireless sensor networks and neural networks. This book main focus is to present the most important possible application of neural networks in reduction of energy consumption.
Enabling Seamless Handoff for Next Generation Networks Enabling Seamless Handoff for Next Generation Networks Новинка

Enabling Seamless Handoff for Next Generation Networks

One of the most challenging aspects in Next Generation Networks (NGNs) is the mechanism through which the different technologies will complement each other to achieve a constant access to networks. This research work deals with the problem of defining fast movements without interruptions (seamless handoffs) in NGNs. This objective is achieved through a secure key distribution process, which enables a fast re-authentication process providing both user anonymity and untraceability. The developed access control system offers a set of features not covered so far by a single solution: (1) applicable for EAP-based NGNs; (2) reduction of the authentication latency in mobile environments irrespective of the type of handoff performed by the user; (3) provision of strong security properties; (4) easy deployment in current networks; (5) compatibility with current standardized technologies; and (6) user privacy support.
Multimedia Traffic Scheduling in Future Wireless Networks Multimedia Traffic Scheduling in Future Wireless Networks Новинка

Multimedia Traffic Scheduling in Future Wireless Networks

Providing delay guarantees to time-sensitive multimedia traffic in future wireless networks is a challenging problem. This is due to the time-varying link capacities and the variety of real-time applications expected to be handled by such networks. Multiuser diversity schemes that exploit the variations in the users' channel conditions offer orders of magnitude increase in the performance of wireless systems. This book addresses the problem of channel-aware scheduling of delay bounded traffic for two different wireless network models: Time Division Multiple Access (TDMA) and Orthogonal Frequency Division Multiple Access (OFDMA) broadband wireless networks. A unique feature of this work is the explicit provisioning of statistical QoS while enhancing fairness in data rates, delay bounds, and delay bound violations. We provide extensive simulation results to show the different performance aspects of the proposed schemes.
Vertical Handoff in Fourth Generation (4G) Wireless Networks Vertical Handoff in Fourth Generation (4G) Wireless Networks Новинка

Vertical Handoff in Fourth Generation (4G) Wireless Networks

We focused on the heterogeneity in the 4G(fourth generation) which allows a high speed and capacity.The main idea consists to track a mobile user moving from a WLAN( Wireless Local Area Network) to a 3G( third generation) network.The decision of the vertical handoff is based on the strength of the signal.In the other hand the handoff execution phase start once the user is tracked at or near the border of a cell. We showed the result through OMNET++.
QoS-Aware Data Query and Transmission in Mobile Opportunistic Networks QoS-Aware Data Query and Transmission in Mobile Opportunistic Networks Новинка

QoS-Aware Data Query and Transmission in Mobile Opportunistic Networks

Mobile opportunistic networks are formed by mobile users who share similar interests and connect with one another by exploiting Bluetooth and/or WiFi connections. Such networks not only re-assemble the real-world interaction between people, but also can effectively propagate data among mobile users. This book focuses on QoS-aware data query and transmission in mobile opportunistic networks. This book consists of six chapters. Chapter 1 provides an introduction to the mobile opportunistic networks. Chapter 2 discusses the background, related work and motivation of this book. Chapter 3 presents efficient data query in mobile opportunistic networks. Chapter 4 introduces efficient quality-of-service (QoS) support in mobile opportunistic networks. Delay-constrained least-cost multicasting in mobile opportunistic networks is discussed in Chapter 5. Finally, Chapter 6 concludes the book.
Load and Interference Aware Routing Metric for WLAN Mesh Networks Load and Interference Aware Routing Metric for WLAN Mesh Networks Новинка

Load and Interference Aware Routing Metric for WLAN Mesh Networks

Wireless Mesh Networks recently attract significant interests due to the minimal infrastructure demands and their potential for supporting mobile and pervasive computing. This work introduces a routing scheme to find best performance routes in WLAN mesh networks. A cross-layer approach is used to overcome self-interference issue of existing load-aware routing metrics. The proposed routing metric was evaluated on a multi-hop wireless emulator which allows us to emulate wireless networks on a wired testbed. Design and implementation of AEROMAN (Architecture to Evaluate Routing Protocols for Multi-hop Ad-hoc Networks) used in the emulator are presented. AEROMAN is the first, to the best of our knowledge, fully distributed approach taking into account properties of contention-based media access for wireless channel, and does not require any special hardware to emulate wireless channel.
Design and Development of Rate Control Protocol (RCP) to RCP++ Design and Development of Rate Control Protocol (RCP) to RCP++ Новинка

Design and Development of Rate Control Protocol (RCP) to RCP++

This book is for readers who have knowledge of networking and wireless networking. I assume basic knowledge of NS2. The book is for moderate to advanced learner and provides the reading and learning of Rate Control Protocol(RCP) and based on it new protocol development of RCP+ and RCP++ with all steps on NS2. The Rate Control Protocol is a congestion control which provides distributed data transfer on networks. The researchers have studied experimental testing of RCP on wired network but they have not given any idea about wireless testing. So far, the entire test in my knowledge is on networks which specify the performance of Rate Control Protocol(RCP) over wireless network. The book explain TCP, RCP, problems with Existing Algorithms, Classification of Congestion Control Schemes, Various TCP and Non TCP Congestion Control Algorithms, Designing of RCP+ and RCP++ Algorithm, Implementation of New RCP+ and RCP++ Algorithm over NS2.35, Testing of algorithm on various scenarios and finally Experimental results and conclusion and future work. This book is the Outcome of UGC Major Research Project, will help Researchers & Students for development of New Protocol on NS2 Platform.
QoS-oriented Multimedia Delivery over 4G Wireless Networks QoS-oriented Multimedia Delivery over 4G Wireless Networks Новинка

QoS-oriented Multimedia Delivery over 4G Wireless Networks

In the evolution of mobile and wireless communications, there can be identified four generations. 4G represents the grand vision of mobile communications, providing mobile users access to advanced applications comparable to those offered by wired networks and, most importantly, maintaining the mobility support which is impossible in wired networks. In this context, this book covers important aspects of the emerging technologies in the heterogeneous next generation network environment with focus on wireless communications and quality of multimedia. The book describes in details several important communication standards, identifies research issues and challenges and presents a survey of the proposed solutions in the literature. The book introduces the newly proposed Dynamic Quality-Oriented Adaptation Scheme (DQOAS), a user-oriented adaptation mechanism that improves user quality of experience (QoE) while also enabling a higher number of simultaneously connected clients to communicate in an IEEE 802.11 network. DQOAS enhances an existing solution, the Quality-Oriented Adaptation Scheme (QOAS) by adding different user QoE expectation levels in the adaptation process.
The Hybrid Algorithm for Data Collection over a Tree Topology in WSN The Hybrid Algorithm for Data Collection over a Tree Topology in WSN Новинка

The Hybrid Algorithm for Data Collection over a Tree Topology in WSN

Wireless sensor networks have wide range of application such as analysis of traffic, monitoring of environmental, industrial process monitoring, technical systems, civilian and military application. Data collection is a basic function of wireless sensor networks (WSN) where sensor nodes determine attributes about a phenomenon of concern and transmits their readings to a common base station(sink node). In this paper, we use contention-free Time Division Multiple Access (TDMA) support scheduling protocols for such data collection applications over tree-based routing topology. We represent a data gathering techniques to get the growing capacity, routing protocol all along with algorithms planned for remote wireless sensor networks. This Work describes about the model of sensor networks which has been made workable by the junction of micro-electro-mechanical systems technologies, digital electronics and wireless communications. Firstly the sensing tasks and the potential sensor network applications are explored, and assessment of factors influencing the design of sensor networks is provided.
Performance of Wireless Ad Hoc Networks Performance of Wireless Ad Hoc Networks Новинка

Performance of Wireless Ad Hoc Networks

This book investigates the performance of point-to-point wireless ad hoc networks. Approaching the design of these networks through the medium access control (MAC) layer, analytical expressions are derived for the outage probability, which is defined as the probability of receiving messages erroneously. Moreover, the impact of various ad hoc network characteristics (such as fading and bounded region) is investigated. Having established an understanding of the behavior of ad hoc networks, we propose MAC layer techniques to improve the performance. Three schemes are proposed: 1) optimization of the sensing threshold in CSMA, 2) enhanced decision making ability of CSMA, and 3) introduction of bandwidth partitioning. Finally, we step into the domain of multiple input multiple output (MIMO) communications. The performance of MIMO networks with no transmitter channel state information (CSIT) is analyzed, and different transmission schemes are proposed to achieve the best usage of transmit antennas. With the addition of CSIT, we consider various interference management schemes, and propose a distributed binary power control scheme that ensures an increase in the sum rate of MIMO networks.
Dynamic Routing and Resource Allocation in Elastic Optical Networks Dynamic Routing and Resource Allocation in Elastic Optical Networks Новинка

Dynamic Routing and Resource Allocation in Elastic Optical Networks

Elastic Optical Networks (EON) is widely accepted today as the next step in the evolution toward high capacity networking. The idea behind it is to optimize the use of resources by flexibly assigning spectrum, data rate and modulation format adapted to the needs of the end-to-end connection requests. This book is devoted to the study of three important issues in EONs, 1) dynamic source aggregation of sub-wavelength connections, 2) correlation between traffic granularity and defragmentation periodicity and 3) using spectrum fragmentation to better allocate time-varying connections.
Wireless Underground Sensor Networks Wireless Underground Sensor Networks Новинка

Wireless Underground Sensor Networks

Wireless Underground Sensor Networks (WUSNs) are the networks of wireless sensors that operate below the ground surface. These sensors are either buried completely in soil medium, or placed within a bounded open underground space, such as underground mines and tunnels. WUSNs enable a wide variety of novel applications, including intelligent irrigation, underground structure monitoring, and border patrol and intruder detection. This dissertation is concerned with establishing reliable and efficient communications in the network of wireless sensor nodes that are deployed in either soil medium or underground mines and tunnels.
Benny Bing Broadband Wireless Multimedia Networks Benny Bing Broadband Wireless Multimedia Networks Новинка

Benny Bing Broadband Wireless Multimedia Networks

Provides a clear, coherent review of all major wireless broadband standards with an emphasis on managing the explosive growth in mobile video 802.11ac/ad, 802.16m, 802.22, and LTE-Advanced are the emerging broadband wireless standards that offer many powerful wireless features. This book gives an accessible overview of the various standards and practical information on 802.11 link adaptation, 4G smartphone antenna design, wireless video streaming, and smart grids. Broadband Wireless Multimedia Networks distills the many complex wireless features in a clean and concise manner so that the reader can understand the key principles. Topics covered include adaptive modulation and coding, orthogonal frequency-division multiple access, single-carrier frequency-division multiple access, multiple antenna systems, medium access control time and frequency-division duplex, transmission, and the frame formats. With wireless operators now carrying a much greater amount of video traffic than data and voice traffic, the book also covers adaptive bit rate streaming and bandwidth management for 3D and HD video delivery to multi-screen personal devices. Featured chapters in the book are: Overview of Broadband Wireless Networks IEEE 802.11 Standard IEEE 802.16 Standard Long-Term Evolution ATSC Digital TV and IEEE 802.22 Standards Mesh, Relay, and Interworking Networks Wireless Video Streaming Green Communications in Wireless Home Area Networks Including over 180 chapter-end exercises and 200 illustrative figures; and accessible recorded tutorials, Broadband Wireless Multimedia Networks is ideal for industry professionals and practitioners, graduate students, and researchers.
Performance Analysis of the CAP-SV Routing Protocol Performance Analysis of the CAP-SV Routing Protocol Новинка

Performance Analysis of the CAP-SV Routing Protocol

With the advancement in electronics and communications, wireless networks in all sizes and structures have become prolific. Wireless ad hoc networks, in which there is no central coordination, are one of the emerging types as opposed to the classical wireless networks with base station/access point management. Sensor networks, vehicular networks, or temporary wireless networks that are setup among participants of a short-lived convention such as a business meeting are examples to wireless ad hoc networks. In some of these cases, the stations might have power constraints, such as sensors living on batteries never to be replaced. Therefore, designing protocols for these networks should take into account these requirements. In this study, we present an analytical study of the performance of a power-aware routing protocol in terms of power consumption. The CAP-SV routing protocol was proposed in a 2004 paper along with simulation results. We provide analytical verification to the orginal simulations.
Communication over Interference in Wireless Networks Communication over Interference in Wireless Networks Новинка

Communication over Interference in Wireless Networks

Wireless technologies grow rapidly and benefit almost every aspect of our daily lives. In a typical multiple-user environment, different users may severely interfere with each other. How to reduce the coordination overhead in order to improve the efficiency of the wireless networks becomes a big challenge. Unlike the wired counterpart, a wireless link is easily affected by environment changes and surrounding wireless activities. Determining the instant link conditions (or qualities) is essential for most protocol designs and application developments in wireless communications. In this book, we introduce several techniques which leverage the physical layer information or cross layer design to enhance the wireless network performance.
Efficient Routing Protocols for Multi-radio Wireless Mesh Networks Efficient Routing Protocols for Multi-radio Wireless Mesh Networks Новинка

Efficient Routing Protocols for Multi-radio Wireless Mesh Networks

The unique characteristics of multi-radio wireless mesh networks, such as shared nature of wireless channels, use of multiple radio interfaces, stationary mesh routers, and user-to-gateway traffic pattern, make them different from wired-networks and other wireless networks. In particular, the effects of an unbalanced load can cause rapid gateway overloading, center overloading, or channel overloading. Since most traffic in a WMN is destined towards gateways, traffic concentration at gateway nodes creates a load imbalance at certain gateways, which in turn results in gateway overloading. The issue of center overloading refers to the nodes located near the geographical center of the network becoming overloaded in comparison to other nodes in the network. Finally, channel overloading in a multi-radio wireless mesh network refers to certain channels becoming overloaded compared to other channels. Thus, load balancing is necessary to avoid hot spots and to increase network utilization, as bad routes can exist for a long time in a static network and result in congestion and inefficient use of network resources.
Using Case-based Reasoning to Control Traffic Consumption Using Case-based Reasoning to Control Traffic Consumption Новинка

Using Case-based Reasoning to Control Traffic Consumption

Revision with unchanged content. Quality of Service (QoS) is commonly used to shape network traffic to meet specified criteria. The various scenarios include limiting and reserving bandwidth for a particular application, host or user, prioritizing latency sensitive traffic or equal distribution of unreserved bandwidth. There are, however, other applications, such as distributing and controlling a traffic quota. These are very common in shared networks, where QoS provides more sophisticated means than fixed per user limits and simple disconnection after the user reaches the limit. The simplest approach to restrict the bandwidth to a fixed rate is a rather awkward albeit effective solution. The DynShaper software takes a more sophisticated approach to this problem. This book covers the algorithms used by the DynShaper software to create a fair and efficient distribution of a traffic quota in shared networks.
Embedding QoS in Wireless Mesh routing Embedding QoS in Wireless Mesh routing Новинка

Embedding QoS in Wireless Mesh routing

This book covers The key advantages of Wireless Mesh networks. QoS requirements and challenges in providing QoS in wireless Networks are discussed in detail. Key aspects of routing metric designing issues. This book also covers the Optimized Link State Routing (OLSR) in detail. A large set of Link aware routing metrics is covered. A novel approach for estimation of node to node available bandwidth is explained with illustration. A WCMAB metric for routing in multirate Wireles Mesh Networks is derived.
Mimo System Using Vblast Detection Algorithms Mimo System Using Vblast Detection Algorithms Новинка

Mimo System Using Vblast Detection Algorithms

Wireless communication is an emerging field, which has seen enormous growth in the last several years. Wireless Networks and the exponential growth of the internet have resulted in an increased demand for new methods of obtaining robust, high capacity wireless networks. In this book, we have mainly focused on various methods for improving the spectral efficiency and link reliability of Wireless network using MIMO-OFDM system, and also observing the bandwidth efficiency with the varying length of cyclic prefix. We have also focused on different detection algorithms required in the reception of MIMO-OFDM signals, which have recently emerged as a very promising approach to solve detection problem.
Advanced 3G Systems based-Cross Layer Schemes Advanced 3G Systems based-Cross Layer Schemes Новинка

Advanced 3G Systems based-Cross Layer Schemes

Next generation wireless and mobile cellular networks are expected to support multimedia applications with different quality of service (QoS). User mobility and time-varying multipath fading of wireless channels make QoS provisioning a challenging issue in wireless and mobile networks. In order to provide service differentiation and QoS guarantee in such networks, many new technologies have been proposed. Wideband code division multiple access (WCDMA) is the major multiple access technology for the third generation (3G) and beyond mobile communication systems. One major challenge in multimedia services over WCDMA-based networks is QoS provisioning with efficient resource utilization. The allocation and management of radio resources are crucial for such networks, where the scarce wireless spectrum resources are shared by multiple users. On the other hand, in the standard layered networking architecture, each layer is designed and operated independently. However, wireless channels suffer from both interference and inherent instability; moreover, the statistical channel characteristics of different users are different.
Advanced Clustering Scheme for Wireless Sensor Networks Advanced Clustering Scheme for Wireless Sensor Networks Новинка

Advanced Clustering Scheme for Wireless Sensor Networks

This book deals with the concepts of Wireless Sensor Networks. The authors have tried to discuss the problems of over energy consumption during the operation of sensor nodes. Furthermore they have proposed the solution of those problems by introducing an advanced Clustering scheme. The solution in book contains theoretical aspects as well as practical aspects. Readers will get sufficient knowledge about Wireless Sensor Networks and Clustering Schemes.
IEEE 802.15.4 Protocol Implementation on FPGA IEEE 802.15.4 Protocol Implementation on FPGA Новинка

IEEE 802.15.4 Protocol Implementation on FPGA

The IEEE 802.15.4 is a wireless standard introduced for low power, low cost wireless communication with moderate data rates. In the next few years, it is expected that Low Rate Wireless Personal Area Networks (LR-WPAN) will be used in a wide variety of embedded applications, including home automation, industrial sensing and control, environmental monitoring and sensing. Wireless Pan employs one of the two connection arrangements namely full mesh topology and partial mesh topology. One of the MAC schemes proposed is slotted Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), and this paper analyzes whether this scheme meets the design constraints of those low-power and low-cost sensor networks.
Heterogeneous Wireless Networks Heterogeneous Wireless Networks Новинка

Heterogeneous Wireless Networks

Revision with unchanged content. Heterogeneous wireless networks (HWNs) provide flexible and diversified wireless network access (e.g., cellular, IEEE 802.11) by integrating cellular net­works, wireless LANs, and ad hoc networks with the Internet. It has been emerging as a promising solution to offer a variety of exciting applications, anytime and anywhere. The flexibility and benefits of the HWN, for example, is to extend the service coverage of the existing cellular and WLAN infra­structure, to improve the communication throughput, and reduce packet transmission latency, based on availability of different types of radio network in the roaming area (cellular, WLAN, or others). In the study, we answer some fundamental questions in the design and deployment of a HWN. The first is how to effectively operate a mobile terminal in ad hoc mode to access the Internet through a cellular network, WLAN or other underlying wireless access networks. The second is how to design ubiquitous seamless mobility support for a roaming user, allowing ubiquitous and bi-directional Internet acces­sibility, connectivity, and mobility. Finally, it answers the questions that what is the security threats for a mobile terminal that is operating in the ad hoc mode, and how to provide information confidentiality for a continuously mo­ving mobile terminal.
Live video streaming over wireless networks Live video streaming over wireless networks Новинка

Live video streaming over wireless networks

Due to growing demand for wireless access technology (802.11 standards) the high capacity multimedia transmission over wireless networks pose many challenges, by taking note that video streaming has gained enormous popularity and is accountable for a large fraction of current internet traffic. In order to have an appropriate video transmission over wireless network especially when it comes to large scale users and roaming intensity, many requirements must be considered. Large throughput and minimum delay are the most significant requirements to keep the transmission stable and seamless. Jitter is another important factor in degradation of the quality of received video. To achieve the seamless live video streaming with high quality of service (QoS) different technologies must be studied, such as video encoding/decoding platforms, transmission technologies (unicast/multicast), mobility models and efficient handoff methods. These issues are addressed in this project.
Next Generation Passive Optical Networks Next Generation Passive Optical Networks Новинка

Next Generation Passive Optical Networks

The Book cover the research efforts made in the field of Passive Optical Access Networks in the recent years.Theory and principles of the related fields are presented with comprehension. Different Network Architectures of Downstream and upstream for achieving colorless transmission in passive optical access networks are included. Performance of Passive Optical Networks are analyzed through simulation and experimental work. The Design issues of Transmitters and Receivers are addressed with detailed analysis .The analysis parameters mainly include data rate, launch power, transmission distance, Bet Error Rate and Signal to Noise Ratio. impact of Non linear factors like Rayleigh backscattering on the transmission performance is also presented. Power Budgeting issues of various scheme are also included in analysis part. The Results are presented pictorially with powerful tool of ORIGIN.The Conclusions are drawn and presented in effective way.
Performance Evaluation of AODV and DSR for Wireless Sensor Networks Performance Evaluation of AODV and DSR for Wireless Sensor Networks Новинка

Performance Evaluation of AODV and DSR for Wireless Sensor Networks

The power of wireless sensor networks (WSN) lies in the ability to deploy large numbers of tiny nodes that assemble and configure themselves. Usage scenarios for these devices range from real-time tracking, to monitoring of environmental conditions, to Military applications, to monitoring of the health of structures or equipment. There is extensive research in the development of new algorithms for data aggregation ,ad hoc routing, and distributed signal processing in the context of wireless sensor networks. As the algorithms and protocols for wireless sensor network are developed, they must be supported by a low-power, efficient and flexible hardware platform. This book describes systematic performance study of two state-of-the-art dynamic routing protocols for WSN, the Dynamic Source Routing protocol (DSR) and the Ad Hoc On-Demand DistanceVector protocol (AODV).
Performance Analaysis of H.264 Video Codec in Wireless Environment Performance Analaysis of H.264 Video Codec in Wireless Environment Новинка

Performance Analaysis of H.264 Video Codec in Wireless Environment

In daily life use of high-quality and low-bit rate video communication is growing day by day. The ending of the 20th century multimedia traffic, especially which video streaming has increased by using H.264/Advanced Video Coding (AVC) standard. The exceptional performance of H.264/AVC has attracted the attention of the electronics industry, and some broadcasted digital programs on wireless mobile phones use a video codec made with the H.264/AVC standard. Streaming video is becoming famous over current generation of mobile wireless network. The applications expected for the H.264/AVC standard consist of broadcast over cable, multi-media streaming services over cable modem, local area network (LAN),and wireless networks; conversational services over wireless and mobile networks, and multimedia messaging services over LAN, wireless, and mobile networks. With such wide application coverage, H.264/AVC quickly received a great deal of recent attention from industry and found wide-spread standard system.
Voice Over WLANs: The Complete Guide Voice Over WLANs: The Complete Guide Новинка

Voice Over WLANs: The Complete Guide

Wireless local area networks (WLANs) have traditionally been used to transport only data, but are now being used to carry voice traffic as well as provided new combined voice and data services. Voice over WLANs also offers more flexibility than wired networks (changes to a WLAN don't require changes to installed wiring) and greater capacity than wired networks. This book provides a solid overview of voice over WLANs/VoIP (voice over internet protocol) technology, including voice coding, packet loss, delay and jitter, and echo control. It shows how to combine both WLAN and VoIP technology to create effective voice over WLAN systems. Gives complete details on integrating voice and data services on WLANs, including wide area networks. Explores quality of service (QoS) and security issues. Step-by-step descriptions of how to plan and implement voice over WLAN networks.
Quality of Service in next generation mobile and wireless networks Quality of Service in next generation mobile and wireless networks Новинка

Quality of Service in next generation mobile and wireless networks

In accordance with the latest research, this book presents several segments that describe the direction and techniques together with actual implementation of new methods for controlling and improving of the quality of services in future generation mobile networks. It gives review of the architectures of the future generations of networks, it performs analysis of network architectures in heterogeneous networks and the ways radio resource management is achieved in each of them. The main focus was given on the heterogeneous wireless networks, through which a new proposal is presented for their architecture of internetwork operation using the Internet model for interoperability between radio access technologies that participate in the construction of heterogeneous networks. The proposed new architecture in this book defines the unique ecosystem of inter-network operation between different RAT’s that form next generation mobile networks. Furthermore, the book defines a new algorithm for selecting of access network in heterogeneous wireless environment by using algorithms from artificial intelligence. This proposal can be base for implementation of new 5G architecture.

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Provides a clear, coherent review of all major wireless broadband standards with an emphasis on managing the explosive growth in mobile video 802.11ac/ad, 802.16m, 802.22, and LTE-Advanced are the emerging broadband wireless standards that offer many powerful wireless features. This book gives an accessible overview of the various standards and practical information on 802.11 link adaptation, 4G smartphone antenna design, wireless video streaming, and smart grids. Broadband Wireless Multimedia Networks distills the many complex wireless features in a clean and concise manner so that the reader can understand the key principles. Topics covered include adaptive modulation and coding, orthogonal frequency-division multiple access, single-carrier frequency-division multiple access, multiple antenna systems, medium access control time and frequency-division duplex, transmission, and the frame formats. With wireless operators now carrying a much greater amount of video traffic than data and voice traffic, the book also covers adaptive bit rate streaming and bandwidth management for 3D and HD video delivery to multi-screen personal devices. Featured chapters in the book are: Overview of Broadband Wireless Networks IEEE 802.11 Standard IEEE 802.16 Standard Long-Term Evolution ATSC Digital TV and IEEE 802.22 Standards Mesh, Relay, and Interworking Networks Wireless Video Streaming Green Communications in Wireless Home Area Networks Including over 180 chapter-end exercises and 200 illustrative figures; and accessible recorded tutorials, Broadband Wireless Multimedia Networks is ideal for industry professionals and practitioners, graduate students, and researchers.
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