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Author: Zhengguo Sheng Publisher: CRC Press ISBN: 1482238217 Category : Computers Languages : en Pages : 223
Book Description
Compared with conventional communications, cooperative communication allows multiple users in a wireless network to coordinate their packet transmissions and share each other's resources, thus achieving high-performance gain and better service coverage and reliability. Energy Efficient Cooperative Wireless Communication and Networks provides a comprehensive look at energy efficiency and system design of cooperative wireless communication. Introducing effective cooperative wireless communication schemes, the book supplies the understanding and methods required to improve energy efficiency, reliability, and end-to-end protocol designs for wireless communication systems. It explains the practical benefits and limitations of cooperative transmissions along with the associated designs of upper-layer protocols, including MAC, routing, and transport protocol. The book considers power efficiency as a main objective in cooperative communication to ensure quality-of-service (QoS) requirements. It explains how to bring the performance gain at the physical layer up to the network layer and how to allocate network resources dynamically through MAC/scheduling and routing to trade off the performance benefits of given transmissions against network costs. Because the techniques detailed in each chapter can help readers achieve energy efficiency and reliability in wireless networks, they have the potential to impact a range of industry areas, including wireless communication, wireless sensor networks, and ad hoc networks. The book includes numerous examples, best practices, and models that capture key issues in real-world applications. Along with algorithms and tips for effective design, the book supplies the understanding you will need to achieve high-performing and energy efficient wireless networks with improved service coverage and reliability.
Author: Zhengguo Sheng Publisher: CRC Press ISBN: 1482238217 Category : Computers Languages : en Pages : 223
Book Description
Compared with conventional communications, cooperative communication allows multiple users in a wireless network to coordinate their packet transmissions and share each other's resources, thus achieving high-performance gain and better service coverage and reliability. Energy Efficient Cooperative Wireless Communication and Networks provides a comprehensive look at energy efficiency and system design of cooperative wireless communication. Introducing effective cooperative wireless communication schemes, the book supplies the understanding and methods required to improve energy efficiency, reliability, and end-to-end protocol designs for wireless communication systems. It explains the practical benefits and limitations of cooperative transmissions along with the associated designs of upper-layer protocols, including MAC, routing, and transport protocol. The book considers power efficiency as a main objective in cooperative communication to ensure quality-of-service (QoS) requirements. It explains how to bring the performance gain at the physical layer up to the network layer and how to allocate network resources dynamically through MAC/scheduling and routing to trade off the performance benefits of given transmissions against network costs. Because the techniques detailed in each chapter can help readers achieve energy efficiency and reliability in wireless networks, they have the potential to impact a range of industry areas, including wireless communication, wireless sensor networks, and ad hoc networks. The book includes numerous examples, best practices, and models that capture key issues in real-world applications. Along with algorithms and tips for effective design, the book supplies the understanding you will need to achieve high-performing and energy efficient wireless networks with improved service coverage and reliability.
Author: Zhengguo Sheng Publisher: ISBN: Category : Languages : en Pages : 221
Book Description
Compared with conventional communications, cooperative communication allows multiple users in a wireless network to coordinate their packet transmissions and share each other's resources, thus achieving high-performance gain and better service coverage and reliability. Energy Efficient Cooperative Wireless Communication and Networks provides a comprehensive look at energy efficiency and system design of cooperative wireless communication. Introducing effective cooperative wireless communication schemes, the book supplies the understanding and methods required to improve energy efficiency, reliability, and end-to-end protocol designs for wireless communication systems. It explains the practical benefits and limitations of cooperative transmissions along with the associated designs of upper-layer protocols, including MAC, routing, and transport protocol. The book considers power efficiency as a main objective in cooperative communication to ensure quality-of-service (QoS) requirements. It explains how to bring the performance gain at the physical layer up to the network layer and how to allocate network resources dynamically through MAC/scheduling and routing to trade off the performance benefits of given transmissions against network costs. Because the techniques detailed in each chapter can help readers achieve energy efficiency and reliability in wireless networks, they have the potential to impact a range of industry areas, including wireless communication, wireless sensor networks, and ad hoc networks. The book includes numerous examples, best practices, and models that capture key issues in real-world applications. Along with algorithms and tips for effective design, the book supplies the understanding you will need to achieve high-performing and energy efficient wireless networks with improved service coverage and reliability.
Author: Uysal, Murat Publisher: IGI Global ISBN: 1605666661 Category : Computers Languages : en Pages : 632
Book Description
Offers practitioners, researchers, and academicians with fundamental principles of cooperative communication. This book provides readers diverse findings and exposes underlying issues in the analysis, design, and optimization of wireless systems.
Author: Jie Yang Publisher: ISBN: Category : Antenna arrays Languages : en Pages : 332
Book Description
Abstract: This dissertation studies several problems centered around developing a better understanding of the energy efficiency of cooperative wireless communication systems. Cooperative communication is a technique where two or more nodes in a wireless network pool their antenna resources to form a "virtual antenna array". Over the last decade, researchers have shown that many of the benefits of real antenna arrays, e.g. spatial diversity, increased range, and/or decreased transmission energy, can be achieved by nodes using cooperative transmission. This dissertation extends the current body of knowledge by providing a comprehensive study of the energy efficiency of two-source cooperative transmission under differing assumptions about channel state knowledge, cooperative protocol, and node selfishness. The first part of this dissertation analyzes the effect of channel state information on the optimum energy allocation and energy efficiency of a simple cooperative transmission protocol called "orthogonal amplify-and-forward" (OAF). The source nodes are required to achieve a quality-of service (QoS) constraint, e.g. signal to noise ratio or outage probability, at the destination. Since a QoS constraint does not specify a unique transmit energy allocation when the nodes use OAF cooperative transmission, minimum total energy strategies are provided for both short-term and long-term QoS constraints. For independent Rayleigh fading channels, full knowledge of the channel state at both of the sources and at the destination is shown to significantly improve the energy efficiency of OAF cooperative transmission as well as direct (non-cooperative) transmission. The results also demonstrate how channel state knowledge affects the minimum total energy allocation strategy. Under identical channel state knowledge assumptions, the results demonstrate that OAF cooperative transmission tends to have better energy efficiency than direct transmission over a wide range of channel conditions. The second part of this dissertation focuses on the development of an opportunistic hybrid cooperative transmission protocol that achieves increased energy efficiency by not only optimizing the resource allocation but also by selecting the most energy efficient cooperative transmission protocol from a set of available protocols according to the current channel state. The protocols considered in the development of the hybrid cooperative transmission protocol include compress-and-forward (CF), estimate-and-forward (EF), non-orthogonal amplify-and-forward (NAF), and decode-and-forward (DF). Instantaneous capacity results are analyzed under the assumption of full channel state knowledge at both of the sources and the destination node. Numerical results are presented showing that the delay limited capacity and outage probability of the hybrid cooperative transmission protocol are superior to that of any single protocol and are also close to the cut-set bound over a wide range of channel conditions. The final part of this dissertation focuses on the issue of node selfishness in cooperative transmission. It is common to assume in networks with a central authority, e.g. military networks, that nodes will always be willing to offer help to other nodes when requested to do so. This assumption may not be valid in ad hoc networks operating without a central authority. This section of the dissertation considers the effect selfish behavior on the energy efficiency of cooperative communication systems. Using tools from non-cooperative game theory, a two-player relaying game is formulated and analyzed in non-fading and fading channel scenarios. In non-fading channels, it is shown that a cooperative equilibrium can exist between two self-interested sources given that the end of the cooperative interaction is uncertain, that the sources can achieve mutual benefit through cooperation, and that the sources are sufficiently patient in the sense that they value future payoffs. In fading channels, a cooperative conditional trigger strategy is proposed and shown to be an equilibrium of the two-player game. Sources following this strategy are shown to achieve an energy efficiency very close to that of a centrally-controlled system when they are sufficiently patient. The results in this section show that cooperation can often be established between two purely self-interested sources without the development of extrinsic incentive mechanisms like virtual currency.
Author: K. J. Ray Liu Publisher: Cambridge University Press ISBN: 0521895138 Category : Computers Languages : en Pages : 643
Book Description
Presents the fundamentals of cooperative communications and networking with a holistic approach to principal topics where improvements can be obtained.
Author: Himal A. Suraweera Publisher: IET ISBN: 1839530677 Category : Technology & Engineering Languages : en Pages : 476
Book Description
The energy crisis, growth in data traffic and increasing network complexity are driving the development of energy-efficient architectures, technologies and networks. This edited book presents research from theory to practice, plus methods and technologies for designing next generation green wireless communication networks.
Author: Dushantha Nalin K. Jayakody Publisher: Springer ISBN: 3319566695 Category : Technology & Engineering Languages : en Pages : 384
Book Description
This book presents breakthroughs in the design of Wireless Energy Harvesting (WEH) networks. It bridges the gap between WEH through radio waves communications and power transfer, which have largely been designed separately. The authors present an overview of the RF-EHNs including system architecture and RF energy harvesting techniques and existing applications. They also cover the idea of WEH in novel discoveries of information, the theoretical bounds in WEH, wireless sensor networks, usage of modern channel coding together with WEH, energy efficient resource allocation mechanisms, distributed self-organized energy efficient designs, delay-energy trade-off, specific protocols for energy efficient communication designs, D2D communication and energy efficiency, cooperative wireless networks, and cognitive networks.
Author: Jianjie Tian (‡e author) Publisher: ISBN: Category : Radio Languages : en Pages : 167
Book Description
Energy efficient cooperative diversity techniques are investigated in this thesis with the aim of improving the energy efficiency of wireless sensor networks (WSNs) in the presence of additive white Gaussian noise (AWGN) and frequency-selective Rayleigh fading without degrading the reliability of data transmission. The studies reported mainly focus the theoretical aspects of aiming establishing the feasibility of employing cooperative diversity techniques in WSNs (subject to AWGN and frequency-selective Rayleigh fading) to effectively improve the network’s energy efficiency in the physical layer. With improvements to energy efficiency, the operational lifetime of WSN applications operating in indoor environments can be prolonged.A mathematical model of a single input single output (SISO) wireless communication system with direct sequence spread spectrum (DSSS) transceivers in the presence of AWGN and frequency-selective Rayleigh fading is proposed, modelled, theoretically analysed and simulated. In order to save the transmit energy consumption of sensor nodes, DSSS transceivers with chip-interleaving signal processing are considered as well. Analytical expressions of bit error rate (BER) in closed form are derived and analysed for wireless systems using DSSS transceivers, with or without chip-interleaving signal processing. Using the derived BER algorithms, the BER performances of virtual-multiple-input-single-output (vMISO), decode-and-forward (DF) and adaptive decode-and-forward (aDF) cooperation in WSNs subject to AWGN and frequency-selective Rayleigh fading are investigated as well.Performance evaluations are carried out based on the BER expressions and energy consumption models of vMISO, DF and aDF cooperation in terms of their optimal transmit power allocation and partner selection region. Because the energy expenditure of a sensor node can also be reduced by using the chip-interleaving signal processing, cooperative diversity (vMISO and DF) and chip-interleaved techniques are employed in combination to further improve the energy efficiency of WSNs operating over AWGN channels with frequency-selective Rayleigh fading. Furthermore,several simple partner selection heuristics are developed for energy efficient vMISO and DFcooperative schemes, which will enable resource-constrained sensor nodes to make cooperation decisions independently and autonomously. In summary, the analytical and simulation results demonstrate that the energy efficiency of WSNs subject to AWGN and frequency-selective Rayleigh fading can be significantly improved by implementing the cooperative diversity techniques and the chip interleaving technique, individually or in combination.
Author: Zhengguo Sheng
Author: Zhengguo Sheng
Author: Zhengguo Sheng
Author: Abdelrahman Abdelkader
Author: Uysal, Murat
Author: Jie Yang
Author: K. J. Ray Liu
Author: Ruoxuan Qi
Author: Himal A. Suraweera
Author: Dushantha Nalin K. Jayakody
Author: Jianjie Tian (‡e author)