Feedback And Cooperation In Wireless Networks

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Feedback and Cooperation in Wireless Networks

Author : Mohammad Javad Abdoli Hoseinabadi
Publisher :
ISBN 13 :
Total Pages : 165 pages
Book Rating : 4.:/5 (835 download)

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Book Synopsis Feedback and Cooperation in Wireless Networks by : Mohammad Javad Abdoli Hoseinabadi

Download or read book Feedback and Cooperation in Wireless Networks written by Mohammad Javad Abdoli Hoseinabadi and published by . This book was released on 2012 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for wireless data services has been dramatically growing over the last decade. This growth has been accompanied by a significant increase in the number of users sharing the same wireless medium, and as a result, interference management has become a hot topic of research in recent years. In this dissertation, we investigate feedback and transmitter cooperation as two closely related tools to manage the interference and achieve high data rates in several wireless networks, focusing on additive white Gaussian noise (AWGN) interference, X, and broadcast channels. We start by a one-to-many network, namely, the three-user multiple-input multiple-output (MIMO) Gaussian broadcast channel, where we assume that the transmitter obtains the channel state information (CSI) through feedback links after a finite delay. We also assume that the feedback delay is greater than the channel coherence time, and thus, the CSI expires prior to being exploited by the transmitter for its current transmission. Nevertheless, we show that this delayed CSI at the transmitter (delayed CSIT) can help the transmitter to achieve significantly higher data rates compared to having no CSI. We indeed show that delayed CSIT increases the channel degrees of freedom (DoF), which is translated to an unbounded increase in capacity with increasing signal-to-noise-ratio (SNR). For the symmetric case, i.e. with the same number of antennas at each receiver, we propose different transmission schemes whose achievable DoFs meet the upper bound for a wide range of transmit-receive antenna ratios. Also, for the general non-symmetric case, we propose transmission schemes that characterize the DoF region for certain classes of antenna configurations. Subsequently, we investigate channels with distributed transmitters, namely, Gaussian single-input single-output (SISO) K-user interference channel and 2xK X channel under the delayed CSIT assumption. In these channels, in major contrast to the broadcast channel, each transmitter has access only to its own messages. We propose novel multiphase transmission schemes wherein the transmitters collaboratively align the past interference at appropriate receivers using the knowledge of past CSI. Our achievable DoFs are greater than one (which is the channel DoF without CSIT), and strictly increasing in K. Our results are yet the best available reported DoFs for these channels with delayed CSIT. Furthermore, we consider the K-user r-cyclic interference channel, where each transmitter causes interference on only r receivers in a cyclic manner. By developing a new upper bound, we show that this channel has K/r DoF with no CSIT. Moreover, by generalizing our multiphase transmission ideas, we show that, for r=3, this channel can achieve strictly greater than K/3 DoF with delayed CSIT. Next, we add the capability of simultaneous transmission and reception, i.e. full-duplex operation, to the transmitters, and investigate its impact on the DoF of the SISO Gaussian K-user interference and MxK X channel under the delayed CSIT assumption. By proposing new cooperation/alignment techniques, we show that the full-duplex transmitter cooperation can potentially yield DoF gains in both channels with delayed CSIT. This is in sharp contrast to the previous results on these channels indicating the inability of full-duplex transmitter cooperation to increase the channel DoF with either perfect instantaneous CSIT or no CSIT. With the recent technological advances in implementation of full-duplex communication, it is expected to play a crucial role in the future wireless systems. Finally, we consider the Gaussian K-user interference and KxK X channel with output feedback, wherein each transmitter causally accesses the output of its paired receiver. First, using the output feedback and under no CSIT assumption, we show that both channels can achieve DoF values greater than one, strictly increasing in K, and approaching the limiting value of 2 as K[arrr] [infin]. Then, we develop transmission schemes for the same channels with both output feedback and delayed CSIT, known as Shannon feedback. Our achievable DoFs with Shannon feedback are greater than those with the output feedback for almost all values of K.

Cooperation in Wireless Networks: Principles and Applications

Author : Frank H. P. Fitzek
Publisher : Springer Science & Business Media
ISBN 13 : 1402047118
Total Pages : 679 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Cooperation in Wireless Networks: Principles and Applications by : Frank H. P. Fitzek

Download or read book Cooperation in Wireless Networks: Principles and Applications written by Frank H. P. Fitzek and published by Springer Science & Business Media. This book was released on 2006-07-25 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperation in Wireless Networks: Principles and Applications covers the underlying principles of cooperative techniques as well as several applications demonstrating the use of such techniques in practical systems. The book is written in a collaborative manner by several authors from Asia, America, and Europe. This book puts into one volume a comprehensive and technically rich appraisal of the wireless communications scene from a cooperation point of view.

Multiuser Wireless Networks

Author : Lifeng Lai
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Multiuser Wireless Networks by : Lifeng Lai

Download or read book Multiuser Wireless Networks written by Lifeng Lai and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The presence of multiple users in the wireless network offers users with an opportunity to cooperate. Adopting tools from network information theory, this thesis investigates the utilities of user cooperation under various scenarios and examines the validity of cooperation assumption in energy limited networks. We first consider the construction of cooperation strategies for a wireless network composed of three nodes and limited by half-duplex and total power constraints. We show that noisy feedback plays a crucial role in devising efficient cooperation schemes for various channels. For the relay channel, we propose a new cooperation scheme that exploits the wireless feedback gain. Our analysis of the achievable rate of this scheme reveals the diminishing feedback gain at both the low and high signal-to-noise ratio regimes. Inspired by the proposed feedback strategy, we identify a greedy cooperation framework applicable to both the multicast and three-way channels. Our performance analysis reveals the asymptotic optimality of the proposed greedy approach in the wireless network setting. We then establish the utility of user cooperation in facilitating secure wireless communications. In particular, the four-terminal relay-eavesdropper channel is introduced and an outer-bound on the optimal rate-equivocation region is derived. Several cooperation strategies are then devised and the corresponding achievable rate-equivocation regions are characterized. The gain offered by the proposed cooperation strategies is then proved theoretically and validated numerically in the Additive White Gaussian Noise channel. We also examine user cooperation from game theoretic perspective. Using game theoretic framework, the critical role of altruistic nodes in encouraging cooperation is established, both for small and large scale networks. In a small network, where nodes utilize decode-and-forward scheme to cooperate, we show that a relay node, with appropriate strategy and location, successfully turns the Nash Equilibrium from no-cooperation to full-cooperation. In the large scale network, we show that it is sufficient to have a vanishingly small fraction of the nodes to be altruistic, i.e., relay nodes, in order to ensure full cooperation from all the nodes in the network.

Cooperative Communications

Author : Gerhard Kramer
Publisher : Now Publishers Inc
ISBN 13 : 1601980264
Total Pages : 170 pages
Book Rating : 4.6/5 (19 download)

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Book Synopsis Cooperative Communications by : Gerhard Kramer

Download or read book Cooperative Communications written by Gerhard Kramer and published by Now Publishers Inc. This book was released on 2007 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative Communications reviews progress in cooperative communication networks. It assembles a representative sample of recent results to serve as a roadmap for the area. The emphasis is on wireless networks, but many of the results apply to cooperation in wireline networks and mixed wireless/wireline networks. Cooperative Communications is intended as a tutorial for the reader who is familiar with information theory concepts but has not actively followed the field. For the active researcher, it serves as an invaluable digest of significant results. It is designed to encourage readers to find new ways to apply the fundamental ideas of network cooperation. It is also intended to make the area sufficiently accessible to practicing network designers.

Cooperative Communications and Networking

Author : Y.-W. Peter Hong
Publisher : Springer Science & Business Media
ISBN 13 : 1441971947
Total Pages : 411 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Cooperative Communications and Networking by : Y.-W. Peter Hong

Download or read book Cooperative Communications and Networking written by Y.-W. Peter Hong and published by Springer Science & Business Media. This book was released on 2010-07-28 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative and relay communications have recently become the most widely explored topics in communications, whereby users cooperate in transmitting their messages to the destination, instead of conventional networks which operate independently and compete among each other for channel resources. As the field has progressed, cooperative communications have become a design concept rather than a specific transmission technology. This concept has revolutionized the design of wireless networks, allowing increased coverage, throughput, and transmission reliability even as conventional transmission techniques gradually reach their limits. Cooperative and relay technologies have also made their way toward next generation wireless standards, such as IEEE802.16 (WiMAX) or LTE, and have been incorporated into many modern wireless applications, such as cognitive radio and secret communications. Cooperative Communications and Networking: Technologies and System Design provides a systematic introduction to the fundamental concepts of cooperative communications and relays technology to enable engineers, researchers or graduate students to conduct advanced research and development in this area. Cooperative Communications and Networking: Technologies and System Design provides researchers, graduate students, and practical engineers with sufficient knowledge of both the background of cooperative communications and networking, and potential research directions.

Protocol Design and Analysis for Cooperative Wireless Networks

Author : Wei Song
Publisher : Springer
ISBN 13 : 3319477269
Total Pages : 135 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Protocol Design and Analysis for Cooperative Wireless Networks by : Wei Song

Download or read book Protocol Design and Analysis for Cooperative Wireless Networks written by Wei Song and published by Springer. This book was released on 2016-11-03 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the design and analysis of protocols for cooperative wireless networks, especially at the medium access control (MAC) layer and for crosslayer design between the MAC layer and the physical layer. It highlights two main points that are often neglected in other books: energy-efficiency and spatial random distribution of wireless devices. Effective methods in stochastic geometry for the design and analysis of wireless networks are also explored. After providing a comprehensive review of existing studies in the literature, the authors point out the challenges that are worth further investigation. Then, they introduce several novel solutions for cooperative wireless network protocols that reduce energy consumption and address spatial random distribution of wireless nodes. For each solution, the book offers a clear system model and problem formulation, details of the proposed cooperative schemes, comprehensive performance analysis, and extensive numerical and simulation results that validate the analysis and examine the performance under various conditions. The last section of this book reveals several potential directions for the research on cooperative wireless networks that deserve future exploration. Researchers, professionals, engineers, and consultants in wireless communication and mobile networks will find this book valuable. It is also helpful for technical staff in mobile network operations, wireless equipment manufacturers, wireless communication standardization bodies, and governmental regulation agencies.

Feedback in Wireless Networks

Author : Praveen Kumar Gopala
Publisher :
ISBN 13 :
Total Pages : 123 pages
Book Rating : 4.:/5 (184 download)

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Book Synopsis Feedback in Wireless Networks by : Praveen Kumar Gopala

Download or read book Feedback in Wireless Networks written by Praveen Kumar Gopala and published by . This book was released on 2007 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The central theme of this dissertation is the impact of feedback on the performance of wireless networks. Wireless channels offer a multitude of new challenges and opportunities that are uncharacteristic of wireline systems. We reveal the crucial role of feedback in exploiting the opportunities and in overcoming the challenges posed by the wireless medium. In particular, we consider three distinct scenarios and demonstrate the different ways in which feedback helps improve performance. We first consider cellular multicast channels and show that the availability of feedback allows for the cross-layer design of efficient multicast schedulers. Here we focus on two types of feedback scenarios: perfect channel state information (CSI) feedback and automatic repeat request (ARQ) feedback. We propose low-complexity multicast schedulers that achieve near-optimal asymptotic throughput-delay tradeoffs for both feedback scenarios. We further propose a cooperative multicast scheduler, requiring perfect CSI feedback, that achieves the optimal asymptotic scaling of both throughput and delay with the number of users. Next, we consider fading eavesdropper channels and reveal the importance of feedback in establishing secure communications. We characterize the secrecy capacity of such channels under the assumptions of full CSI and main (legitimate) channel CSI knowledge at the transmitter, and propose optimal rate and power allocation strategies. Interestingly, we show that the availability of CSI feedback enables one to exploit the time-varying nature of the wireless medium and achieve a perfectly secure non-zero rate even when the eavesdropper channel is more capable than the legitimate receiver channel on the average. We also propose a low-complexity on/off power allocation strategy and establish its asymptotic optimality. We then consider a minimal ARQ feedback scenario and propose transmission schemes that leverage the ARQ feedback to achieve non-zero perfect secrecy rates. Finally, we consider ARQ channels with strict delay deadline constraints and demonstrate the impact of ARQ feedback on reliability. We show that ARQ feedback can be exploited to significantly improve the achievable error exponents, and propose an Incremental Redundancy ARQ (IR-ARQ) scheme that significantly outperforms the schemes based on memoryless decoding.

Cooperative Wireless Communications

Author : Yan Zhang
Publisher : CRC Press
ISBN 13 : 1420064703
Total Pages : 518 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Cooperative Wireless Communications by : Yan Zhang

Download or read book Cooperative Wireless Communications written by Yan Zhang and published by CRC Press. This book was released on 2009-03-10 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative devices and mechanisms are increasingly important to enhance the performance of wireless communications and networks, with their ability to decrease power consumption and packet loss rate and increase system capacity, computation, and network resilience. Considering the wide range of applications, strategies, and benefits associated wit

Cooperative Cellular Wireless Networks

Author : Ekram Hossain
Publisher : Cambridge University Press
ISBN 13 : 113950049X
Total Pages : 545 pages
Book Rating : 4.1/5 (395 download)

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Book Synopsis Cooperative Cellular Wireless Networks by : Ekram Hossain

Download or read book Cooperative Cellular Wireless Networks written by Ekram Hossain and published by Cambridge University Press. This book was released on 2011-03-10 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained guide to the state-of-the-art in cooperative communications and networking techniques for next generation cellular wireless systems, this comprehensive book provides a succinct understanding of the theory, fundamentals and techniques involved in achieving efficient cooperative wireless communications in cellular wireless networks. It consolidates the essential information, addressing both theoretical and practical aspects of cooperative communications and networking in the context of cellular design. This one-stop resource covers the basics of cooperative communications techniques for cellular systems, advanced transceiver design, relay-based cellular networks, and game-theoretic and micro-economic models for protocol design in cooperative cellular wireless networks. Details of ongoing standardization activities are also included. With contributions from experts in the field divided into five distinct sections, this easy-to-follow book delivers the background needed to develop and implement cooperative mechanisms for cellular wireless networks.

Security and Cooperation in Wireless Networks

Author : Levente Buttyán
Publisher : Cambridge University Press
ISBN 13 : 1139466607
Total Pages : 31 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Security and Cooperation in Wireless Networks by : Levente Buttyán

Download or read book Security and Cooperation in Wireless Networks written by Levente Buttyán and published by Cambridge University Press. This book was released on 2007-11-29 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first self-contained text to consider security and non-cooperative behavior in wireless networks. Major networking trends are analyzed and their implications explained in terms of security and cooperation, and potential malicious and selfish misdeeds are described along with the existing and future security techniques. Fundamental questions of security including user and device identification; establishment of security association; secure and cooperative routing in multi-hop networks; fair bandwidth distribution; and privacy protection are approached from a theoretical perspective and supported by real-world examples including ad hoc, mesh, vehicular, sensor, and RFID networks. Important relationships between trust, security, and cooperation are also discussed. Contains homework problems and tutorials on cryptography and game theory. This text is suitable for advanced undergraduates and graduate students of electrical engineering and computer science, and researchers and practitioners in the wireless industry. Lecture slides and instructor-only solutions available online (www.cambridge.org/9780521873710).

Cooperative Communications for Improved Wireless Network Transmission: Framework for Virtual Antenna Array Applications

Author : Uysal, Murat
Publisher : IGI Global
ISBN 13 : 1605666661
Total Pages : 632 pages
Book Rating : 4.6/5 (56 download)

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Book Synopsis Cooperative Communications for Improved Wireless Network Transmission: Framework for Virtual Antenna Array Applications by : Uysal, Murat

Download or read book Cooperative Communications for Improved Wireless Network Transmission: Framework for Virtual Antenna Array Applications written by Uysal, Murat and published by IGI Global. This book was released on 2009-07-31 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Cooperative and Cognitive Satellite Systems

Author : Symeon Chatzinotas
Publisher : Academic Press
ISBN 13 : 0128001917
Total Pages : 542 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Cooperative and Cognitive Satellite Systems by : Symeon Chatzinotas

Download or read book Cooperative and Cognitive Satellite Systems written by Symeon Chatzinotas and published by Academic Press. This book was released on 2015-05-27 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative and Cognitive Satellite Systems provides a solid overview of the current research in the field of cooperative and cognitive satellite systems, helping users understand how to incorporate state-of-the-art communication techniques in innovative satellite network architectures to enable the next generation of satellite systems. The book is edited and written by top researchers and practitioners in the field, providing a comprehensive explanation of current research that allows users to discover future technologies and their applications, integrate satellite and terrestrial systems and services to create innovative network architectures, understand the requirements and possibilities for future satellite communications standards and protocols, and evaluate the feasibility and practical constraints involved in the deployment process. Provides a solid overview of the current research in the field of co-operative and cognitive satellite systems Presents concepts in multibeam and multicarrier joint processing and high performance random access schemes Explains hybrid and dual satellite systems, cognitive broadband satellite systems, spectrum exploitation, and resource allocation

Security and Data Reliability in Cooperative Wireless Networks

Author : Emad Hassan
Publisher : CRC Press
ISBN 13 : 1351603159
Total Pages : 503 pages
Book Rating : 4.3/5 (516 download)

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Book Synopsis Security and Data Reliability in Cooperative Wireless Networks by : Emad Hassan

Download or read book Security and Data Reliability in Cooperative Wireless Networks written by Emad Hassan and published by CRC Press. This book was released on 2018-04-27 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following a detailed overview of cooperative communications and the physical layer security, this book proposes relay and jammer selection schemes for security in one-way cooperative networks and to improve physical layer security in two-way cooperative networks. It also proposes a Cooperative Hybrid Self-Healing scheme to enhance the confidentiality of the data collected by UWSN. It ends with a proposal called Self-Healing Cluster Controlled Mobility (SH-CCM) scheme based on hybrid cooperation between both Proactive and Reactive peers and the sick sensors at both network and cluster levels to guarantee the security in UWSN.

Sensor Networks

Author : Gianluigi Ferrari
Publisher : Springer Science & Business Media
ISBN 13 : 3642013414
Total Pages : 396 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Sensor Networks by : Gianluigi Ferrari

Download or read book Sensor Networks written by Gianluigi Ferrari and published by Springer Science & Business Media. This book was released on 2010-03-10 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea of this book comes from the observation that sensor networks represent a topic of interest from both theoretical and practical perspectives. The title und- lines that sensor networks offer the unique opportunity of clearly linking theory with practice. In fact, owing to their typical low-cost, academic researchers have the opportunity of implementing sensor network testbeds to check the validity of their theories, algorithms, protocols, etc., in reality. Likewise, a practitioner has the opportunity of understanding what are the principles behind the sensor networks under use and, thus, how to properly tune some accessible network parameters to improve the performance. On the basis of the observations above, the book has been structured in three parts:PartIisdenotedas“Theory,”sincethetopicsofits vechaptersareapparently “detached” from real scenarios; Part II is denoted as “Theory and Practice,” since the topics of its three chapters, altough theoretical, have a clear connection with speci c practical scenarios; Part III is denoted as “Practice,” since the topics of its ve chapters are clearly related to practical applications.

Wireless Multimedia Communication Systems

Author : K.R. Rao
Publisher : CRC Press
ISBN 13 : 1466566019
Total Pages : 492 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Wireless Multimedia Communication Systems by : K.R. Rao

Download or read book Wireless Multimedia Communication Systems written by K.R. Rao and published by CRC Press. This book was released on 2017-07-12 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid progress in software, hardware, mobile networks, and the potential of interactive media poses many questions for researchers, manufacturers, and operators of wireless multimedia communication systems. Wireless Multimedia Communication Systems: Design, Analysis, and Implementation strives to answer those questions by not only covering the underlying concepts involved in the design, analysis, and implementation of wireless multimedia communication systems, but also by tackling advanced topics such as mobility management, security components, and smart grids. Offering an accessible treatment of the latest research, this book: Presents specific wireless multimedia communication schemes that have proven to be useful Discusses important standardization processing activities regarding wireless networking Includes wireless mesh and multimedia sensor network architectures, protocols, and design optimizations Highlights the challenges associated with meeting complex connectivity requirements Contains numerous figures, tables, examples, references, and a glossary of acronyms Providing coverage of significant technological advances in their initial steps along with a survey of the fundamental principles and practices, Wireless Multimedia Communication Systems: Design, Analysis, and Implementation aids senior-level and graduate-level engineering students and practicing professionals in understanding the processes and furthering the development of today’s wireless multimedia communication systems.

Demand Response Application in Smart Grids

Author : Sayyad Nojavan
Publisher : Springer Nature
ISBN 13 : 3030321045
Total Pages : 290 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Demand Response Application in Smart Grids by : Sayyad Nojavan

Download or read book Demand Response Application in Smart Grids written by Sayyad Nojavan and published by Springer Nature. This book was released on 2019-12-05 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes issues surrounding the efficient integration of demand response programs (DRPs) on operation problems in smart grids. The benefits offered by demand response programs (DRPs) for load-serving entities, grid operators, and electricity consumers are explained, including decreased electricity prices and risk management. In-depth chapters discuss the flexibility of market operations, market power mitigation, and environmental benefits—making this a must-have reference for engineers and related practicing professionals working for organizations in the electricity market, including reliability organizations, distribution companies, transmission companies, and electric end-users.

Wireless Communication Systems

Author : Ke-Lin Du
Publisher : Cambridge University Press
ISBN 13 : 1139485768
Total Pages : 1020 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Wireless Communication Systems by : Ke-Lin Du

Download or read book Wireless Communication Systems written by Ke-Lin Du and published by Cambridge University Press. This book was released on 2010-04-15 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practically-oriented, all-inclusive guide covers all the major enabling techniques for current and next-generation cellular communications and wireless networking systems. Technologies covered include CDMA, OFDM, UWB, turbo and LDPC coding, smart antennas, wireless ad hoc and sensor networks, MIMO, and cognitive radios, providing readers with everything they need to master wireless systems design in a single volume. Uniquely, a detailed introduction to the properties, design, and selection of RF subsystems and antennas is provided, giving readers a clear overview of the whole wireless system. It is also the first textbook to include a complete introduction to speech coders and video coders used in wireless systems. Richly illustrated with over 400 figures, and with a unique emphasis on practical and state-of-the-art techniques in system design, rather than on the mathematical foundations, this book is ideal for graduate students and researchers in wireless communications, as well as for wireless and telecom engineers.