The Impact Of Imperfect Feedback On The Capacity Of Wireless Networks

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The Impact of Imperfect Feedback on the Capacity of Wireless Networks

Author : Alireza Vahid
Publisher :
ISBN 13 :
Total Pages : 634 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis The Impact of Imperfect Feedback on the Capacity of Wireless Networks by : Alireza Vahid

Download or read book The Impact of Imperfect Feedback on the Capacity of Wireless Networks written by Alireza Vahid and published by . This book was released on 2015 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The defining metric for any wireless communication network is the maximum reliable data rate, also known as capacity. Before any data bit can be communicated over a wireless channel, information about the network state such as connectivity, channel statistics, or channel gains, is required. Receiver nodes feed such information back to other wireless nodes using feedback channels and feedback mechanisms. Considering the role of feedback makes the characterization of the network capacity a daunting theoretical task. As a result, researchers have overwhelmingly simplified the feedback channels to come up with tractable models. Specifically, it has commonly been assumed that feedback channel has infinite capacity and has no delay. While these assumptions could be justified for small, static, or slow-fading networks, they are not viable in the context of large-scale, mobile, or fast-fading wireless networks. In fact, feedback channel is low-rate, unreliable, scarce, and is subject to delay. The recent dramatic increase in wireless data traffic, caused by the success of online media streaming and the proliferation of smart phones and tablets, obliges researchers to understand the capacity of large-scale mobile networks. Thus, given the limited, scarce nature of feedback channels, future progress in wireless data communications crucially depends on a deeper understanding of the impact of feedback on the capacity of wireless networks. In this work, we aim to adjust the assumptions on feedback channels in a way to open doors to better understanding of real world, large-scale wireless networks. In particular, wireless networks are considered with rate-limited feedback links, with outdated channel state information, and with local views of the network state.

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.

MIMO Wireless Communications

Author : Ezio Biglieri
Publisher : Cambridge University Press
ISBN 13 : 1139461265
Total Pages : 23 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis MIMO Wireless Communications by : Ezio Biglieri

Download or read book MIMO Wireless Communications written by Ezio Biglieri and published by Cambridge University Press. This book was released on 2007-01-08 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple-input multiple-output (MIMO) technology constitutes a breakthrough in the design of wireless communications systems, and is already at the core of several wireless standards. Exploiting multipath scattering, MIMO techniques deliver significant performance enhancements in terms of data transmission rate and interference reduction. This 2007 book is a detailed introduction to the analysis and design of MIMO wireless systems. Beginning with an overview of MIMO technology, the authors then examine the fundamental capacity limits of MIMO systems. Transmitter design, including precoding and space-time coding, is then treated in depth, and the book closes with two chapters devoted to receiver design. Written by a team of leading experts, the book blends theoretical analysis with physical insights, and highlights a range of key design challenges. It can be used as a textbook for advanced courses on wireless communications, and will also appeal to researchers and practitioners working on MIMO wireless systems.

A Glimpse Beyond 5G in Wireless Networks

Author : Mohammad Abdul Matin
Publisher : Springer Nature
ISBN 13 : 3031137868
Total Pages : 286 pages
Book Rating : 4.0/5 (311 download)

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Book Synopsis A Glimpse Beyond 5G in Wireless Networks by : Mohammad Abdul Matin

Download or read book A Glimpse Beyond 5G in Wireless Networks written by Mohammad Abdul Matin and published by Springer Nature. This book was released on 2022-11-30 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the latest research findings on emerging trends in 5G and beyond wireless systems. The authors present and assess different enabling technologies, capabilities, and anticipated communications and computing solutions for 5G and beyond. Topics discussed include new frequency bands, new multiple antenna systems, massive D2D connectivity, new network deployment, and more. These discussions help the readers to understand more advanced research materials for developing new ideas to make a contribution in this field for themselves. This book aims to serve as a virtual and effective bridge between academic research in theory and engineering development in practice. Students, professional, and practitioners who seek to learn the latest development in wireless technologies should find interest in this book.

Coping with Interference in Wireless Networks

Author : Seyed Javad Kazemitabar
Publisher : Springer Science & Business Media
ISBN 13 : 9048199905
Total Pages : 109 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Coping with Interference in Wireless Networks by : Seyed Javad Kazemitabar

Download or read book Coping with Interference in Wireless Networks written by Seyed Javad Kazemitabar and published by Springer Science & Business Media. This book was released on 2010-11-22 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike wired networks where transmitters have no effect on receivers other than their own, in wireless networks we are limited by interference. The traditional routing methods are not optimal any more when it comes to a wireless medium. The maximum data rate on each link depends not only on the power in that link but also on the transmitted power from adjacent links. That is why the problem of power optimal routing needs to be solved jointly with scheduling. This suggests a cross layer design method as opposed to traditional networking where the algorithm for each layer is designed separately. In Coping with Interference in Wireless Networks we introduce several methods engaging different layers of network to mitigate interference in a wireless network.

Feedback Strategies for Wireless Communication

Author : Berna Özbek
Publisher : Springer Science & Business Media
ISBN 13 : 1461477417
Total Pages : 344 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Feedback Strategies for Wireless Communication by : Berna Özbek

Download or read book Feedback Strategies for Wireless Communication written by Berna Özbek and published by Springer Science & Business Media. This book was released on 2013-10-19 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the different strategies regarding limited feedback information. The book analyzes the impact of quantization and the delay of CSI on the performance. The author shows the effect of the reduced feedback information and gives an overview about the feedback strategies in the standards. This volume presents theoretical analysis as well as practical algorithms for the required feedback information at the base stations to perform adaptive resource algorithms efficiently and mitigate interference coming from other cells.

Resource Allocation for OFDMA Systems

Author : Chen Chen
Publisher : Springer
ISBN 13 : 3030193926
Total Pages : 132 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Resource Allocation for OFDMA Systems by : Chen Chen

Download or read book Resource Allocation for OFDMA Systems written by Chen Chen and published by Springer. This book was released on 2019-06-29 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the sources and historic collection campaigns of resource allocation in wireless communication systems. The unique characteristics of MIMO-OFDMA systems are thoroughly studied and summarized. Remarks on resource allocation and spectrum sharing are also presented, which demonstrate the great value of resource allocation techniques, but also introduce distinct challenges of resource allocation in MIMO-OFDMA systems. Novel resource allocation techniques for OFDMA Systems are surveyed from various applications (e.g., for unicast, or multicast with Guaranteed BER and Rate, subcarrier and power allocation with various detectors, low-complexity energyefficient resource allocation, etc.) in this book. Due to the high mobility and low latency requirements of 5G wireless communications, this book discusses how to deal with the imperfect CSI. It also discusses how to deal with e.g., throughput maximization, outage probabilities maximization and guarantee, energy efficiency, physical-layer security issues with feedback channel capacity constraints, in order to characterize and understand the applications of practical scenes. This book will target professionals & researchers working in the fields of Wireless Communications and Networking, Resource Allocation and Transmissions. Advanced-level students in electrical engineering and computer science will also find this book useful as a secondary textbook.

Advances in Networks, Security and Communications: Reviews, Vol. 2

Author : Sergey Yurish
Publisher : Lulu.com
ISBN 13 : 8409145103
Total Pages : 354 pages
Book Rating : 4.4/5 (91 download)

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Book Synopsis Advances in Networks, Security and Communications: Reviews, Vol. 2 by : Sergey Yurish

Download or read book Advances in Networks, Security and Communications: Reviews, Vol. 2 written by Sergey Yurish and published by Lulu.com. This book was released on 2020-02-04 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by 31 contributors from academy and industry from 12 countries (Austria, Bulgaria, China, Croatia, Germany, India, Iran, Singapore, South Korea, Taiwan, UK and USA) the book contains 14 chapters divided into three main parts: Networks (six chapters), Communications (seven chapters) and Security (one chapter). With this unique combination of information in each volume, the 'Advances in Networks, Security and Communications: Reviews' Book Series will be of value for scientists and engineers in industry and universities. Like the first volume of this book Series, the second volume also has been organized by topics of high nterest. In order to offer a fast and easy reading of the state of the art of each topic, every chapter in this book is independent and self-contained. This book ensures that our readers will stay at the cutting edge of the field and get the right and effective start point and road map for the further researches and developments.

New Directions in Wireless Communications Research

Author : Vahid Tarokh
Publisher : Springer Science & Business Media
ISBN 13 : 1441906738
Total Pages : 483 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis New Directions in Wireless Communications Research by : Vahid Tarokh

Download or read book New Directions in Wireless Communications Research written by Vahid Tarokh and published by Springer Science & Business Media. This book was released on 2009-08-19 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Directions in Wireless Communications Research addresses critical issues in the design and performance analysis of current and future wireless system design. Intended for use by system designers and academic researchers, the contributions are by acknowledged international leaders in their field. Topics covered include: (1) Characterization of wireless channels; (2) The principles and challenges of OFDM; (3) Low-correlation sequences for communications; (4) Resource allocation in wireless systems; (5) Signal processing for wireless systems, including iterative systems collaborative beamforming and interference rejection and network coding; (6) Multi-user and multiple input-multiple output (MIMO) communications; (7) Cooperative wireless networks, cognitive radio systems and coded bidirectional relaying in wireless networks; (8) Fourth generation standards such as LTE and WiMax and standard proposals such as UMB. With chapters from some of the leading researchers in the field, this book is an invaluable reference for those studying and practicing in the field of wireless communications. The book provides the most recent information on topics of current interest to the research community including topics such as sensor networks, coding for networks, cognitive networks and many more.

Spectrum Sharing in Wireless Networks

Author : John D. Matyjas
Publisher : CRC Press
ISBN 13 : 1315353350
Total Pages : 697 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Spectrum Sharing in Wireless Networks by : John D. Matyjas

Download or read book Spectrum Sharing in Wireless Networks written by John D. Matyjas and published by CRC Press. This book was released on 2016-11-17 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrum Sharing in Wireless Networks: Fairness, Efficiency, and Security provides a broad overview of wireless network spectrum sharing in seven distinct sections: The first section examines the big picture and basic principles, explaining the concepts of spectrum sharing, hardware/software function requirements for efficient sharing, and future trends of sharing strategies. The second section contains more than 10 chapters that discuss differing approaches to efficient spectrum sharing. The authors introduce a new coexistence and sharing scheme for multi-hop networks, describe the space-time sharing concept, introduce LTE-U, and examine sharing in broadcast and unicast environments. They then talk about different cooperation strategies to achieve mutual benefits for primary users (PU) and secondary users (SU), discuss protocols in a spectrum sharing context, and provide different game theory models between PUs and SUs. The third section explains how to model the interactions of PUs and SUs, using an efficient calculation method to determine spectrum availability. Additionally, this section explains how to use scheduling models to achieve efficient SU traffic delivery. The subject of the fourth section is MIMO-oriented design. It focuses on how directional antennas and MIMO antennas greatly enhance wireless network performance. The authors include a few chapters on capacity/rate calculations as well as beamforming issues under MIMO antennas. Power control is covered in the fifth section which also describes the interference-aware power allocation schemes among cognitive radio users and the power control schemes in cognitive radios. The sixth section provides a comprehensive look at security issues, including different types of spectrum sharing attacks and threats as well as corresponding countermeasure schemes. The seventh and final section covers issues pertaining to military applications and examines how the military task protects its data flows when sharing the spectrum with civilian applications.

Innovative Smart Materials Used in Wireless Communication Technology

Author : Krishan, Ram
Publisher : IGI Global
ISBN 13 : 1668470012
Total Pages : 390 pages
Book Rating : 4.6/5 (684 download)

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Book Synopsis Innovative Smart Materials Used in Wireless Communication Technology by : Krishan, Ram

Download or read book Innovative Smart Materials Used in Wireless Communication Technology written by Krishan, Ram and published by IGI Global. This book was released on 2023-03-03 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, wireless communication has become an integral part of daily life, allowing people across the world to communicate with each other easily, regardless of their geographical location. As these technologies develop, innovations are made in the ways in which they are constructed. Emerging trends in smart material usage in wireless technology requires further investigation for the optimization of next-generation communication technology. Innovative Smart Materials Used in Wireless Communication Technology focuses on the advancements of smart material usage in wireless communication technologies. It analyzes the design, usage, and construction of these smart materials for wireless applications. Covering topics such as millimeter wave antennas, semiconductor materials, and wearable applications, this premier reference source is an essential resource for material engineers and scientists, communications scientists, manufacturers, students and educators of higher education, librarians, researchers, and academicians.

MIMO System Technology for Wireless Communications

Author : George Tsoulos
Publisher : CRC Press
ISBN 13 : 1420005928
Total Pages : 400 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis MIMO System Technology for Wireless Communications by : George Tsoulos

Download or read book MIMO System Technology for Wireless Communications written by George Tsoulos and published by CRC Press. This book was released on 2018-10-03 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: For broadband communications, it was frequency division multiplexing. For optical communications, it was wavelength division multiplexing. Then, for all types of networks it was code division. Breakthroughs in transmission speed were made possible by these developments, heralding next-generation networks of increasing capability in each case. The basic idea is the same: more channels equals higher throughput. For wireless communications, it is space-time coding using multiple-input-multiple-output (MIMO) technology. Providing a complete treatment of MIMO under a single cover, MIMO System Technology for Wireless Communications assembles coverage on all aspects of MIMO technology along with up-to-date information on key related issues. Contributors from leading academic and industrial institutions around the world share their expertise and lend the book a global perspective. They lead you gradually from basic to more advanced concepts, from propagation modeling and performance analysis to space-time codes, various systems, implementation options and limitations, practical system development considerations, field trials, and network planning issues. Linking theoretical analysis to practical issues, the book does not limit itself to any specific standardization or research/industrial initiatives. MIMO is the catalyst for the next revolution in wireless systems, and MIMO System Technology for Wireless Communications lays a thorough and complete foundation on which to build the next and future generations of wireless networks.

Spectrum Sharing in Cognitive Radio Networks

Author : Shweta Pandit
Publisher : Springer
ISBN 13 : 3319531476
Total Pages : 270 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Spectrum Sharing in Cognitive Radio Networks by : Shweta Pandit

Download or read book Spectrum Sharing in Cognitive Radio Networks written by Shweta Pandit and published by Springer. This book was released on 2017-04-12 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the use of the spectrum sharing techniques in cognitive radio technology, in order to address the problem of spectrum scarcity for future wireless communications. The authors describe a cognitive radio medium access control (MAC) protocol, with which throughput maximization has been achieved. The discussion also includes use of this MAC protocol for imperfect sensing scenarios and its effect on the performance of cognitive radio systems. The authors also discuss how energy efficiency has been maximized in this system, by applying a simple algorithm for optimizing the transmit power of the cognitive user. The study about the channel fading in the cognitive user and licensed user and power adaption policy in this scenario under peak transmit power and interference power constraint is also present in this book.

Interference Alignment

Author : Syed A. Jafar
Publisher : Now Publishers Inc
ISBN 13 : 160198474X
Total Pages : 147 pages
Book Rating : 4.6/5 (19 download)

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Book Synopsis Interference Alignment by : Syed A. Jafar

Download or read book Interference Alignment written by Syed A. Jafar and published by Now Publishers Inc. This book was released on 2011 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interference Alignment: A New Look at Signal Dimensions in a Communication Network provides both a tutorial and a survey of the state-of-art on the topic.

Fourth-Generation Wireless Networks: Applications and Innovations

Author : Adibi, Sasan
Publisher : IGI Global
ISBN 13 : 1615206752
Total Pages : 836 pages
Book Rating : 4.6/5 (152 download)

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Book Synopsis Fourth-Generation Wireless Networks: Applications and Innovations by : Adibi, Sasan

Download or read book Fourth-Generation Wireless Networks: Applications and Innovations written by Adibi, Sasan and published by IGI Global. This book was released on 2009-12-31 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourth-Generation Wireless Networks: Applications and Innovations presents a comprehensive collection of recent findings in access technologies useful in the architecture of wireless networks.

Photonic Networks, Optical Technology and Infrastructure

Author : D. W. Faulkner
Publisher : IOS Press
ISBN 13 : 9789051993417
Total Pages : 316 pages
Book Rating : 4.9/5 (934 download)

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Book Synopsis Photonic Networks, Optical Technology and Infrastructure by : D. W. Faulkner

Download or read book Photonic Networks, Optical Technology and Infrastructure written by D. W. Faulkner and published by IOS Press. This book was released on 1997 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: All optical networks offer new possibilities for high bandwidth applications. New techniques are demonstrated for optical switching and network management for complex optical networks. WDM systems allow upgrading of the backbone optical network. This work explores the current state of research and future developments of optical network technology and applications. Photonic networks are discussed from a variety of viewpoints, including network analysis, modelling and simulation, active and passive devices, as well as packaging.

Information Theory, Mathematical Optimization, and Their Crossroads in 6G System Design

Author : Shih-Chun Lin
Publisher : Springer Nature
ISBN 13 : 9811920168
Total Pages : 403 pages
Book Rating : 4.8/5 (119 download)

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Book Synopsis Information Theory, Mathematical Optimization, and Their Crossroads in 6G System Design by : Shih-Chun Lin

Download or read book Information Theory, Mathematical Optimization, and Their Crossroads in 6G System Design written by Shih-Chun Lin and published by Springer Nature. This book was released on 2022-09-18 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a broad understanding of the fundamental tools and methods from information theory and mathematical programming, as well as specific applications in 6G and beyond system designs. The contents focus on not only both theories but also their intersection in 6G. Motivations are from the multitude of new developments which will arise once 6G systems integrate new communication networks with AIoT (Artificial Intelligence plus Internet of Things). Design issues such as the intermittent connectivity, low latency, federated learning, IoT security, etc., are covered. This monograph provides a thorough picture of new results from information and optimization theories, as well as how their dialogues work to solve aforementioned 6G design issues.