Cooperative Relay Diversity For Distributed Wireless Networks
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Cooperative Relay Diversity For Distributed Wireless Networks
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Author : Phee Lep Yeoh
language : en
Publisher:
Release Date : 2012
Cooperative Relay Diversity For Distributed Wireless Networks written by Phee Lep Yeoh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Internetworking (Telecommunication) categories.
Coherent Cooperative Relaying In Low Mobility Wireless Multiuser Networks
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Author : Stefan Berger
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2010
Coherent Cooperative Relaying In Low Mobility Wireless Multiuser Networks written by Stefan Berger and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
In this thesis, several important aspects of cooperative wireless multiuser networks are investigated. The focus lies on coherent two-hop relaying networks where several amplify-and-forward (AF) relays assist the communication between multiple source-destination pairs. First, the impact of local oscillator (LO) imperfections and I/Q imbalance at the relays on two-hop relaying is investigated. A special focus lies on the comparison between frequency division duplexing (FDD) and time division duplexing (TDD) relays. Based on the observation that the direction in which a channel between two wireless nodes is measured has an impact on the estimate, phase synchronization requirements for coherent relaying networks are then found. Several channel estimation protocols that differ in the direction in which the single-hop channels are measured are furthermore identi'ed and their performance is compared. Next, a very simple phase synchronization scheme is presented that provides a set of relays with a common LO phase. Two coherent beamforming schemes, namely multiuser zero-forcing (MUZF) and multiuser minimum mean squared error (MMSE) relaying, are then investigated. Finally, a real-world demonstrator for distributed wireless communication networks (called RACooN Lab) is presented. It was used to implement coherent cooperative communication schemes on a practical two-hop relaying network.
Cooperative Wireless Communications
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Author : Yan Zhang
language : en
Publisher: CRC Press
Release Date : 2009-03-10
Cooperative Wireless Communications written by Yan Zhang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-03-10 with Computers categories.
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
Physical Layer Security For Cooperative Relay Networks
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Author : Yulong Zou
language : en
Publisher: Springer
Release Date : 2016-04-20
Physical Layer Security For Cooperative Relay Networks written by Yulong Zou and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-20 with Computers categories.
This book presents physical-layer security as a promising paradigm for achieving the information-theoretic secrecy required for wireless networks. It explains how wireless networks are extremely vulnerable to eavesdropping attacks and discusses a range of security techniques including information-theoretic security, artificial noise aided security, security-oriented beamforming, and diversity assisted security approaches. It also provides an overview of the cooperative relaying methods for wireless networks such as orthogonal relaying, non-orthogonal relaying, and relay selection.Chapters explore the relay-selection designs for improving wireless secrecy against eavesdropping in time-varying fading environments and a joint relay and jammer selection for wireless physical-layer security, where a relay is used to assist the transmission from the source to destination and a friendly jammer is employed to transmit an artificial noise for confusing the eavesdropper. Additionally, the security-reliability tradeoff (SRT) is mathematically characterized for wireless communications and two main relay-selection schemes, the single-relay and multi-relay selection, are devised for the wireless SRT improvement. In the single-relay selection, only the single best relay is chosen for assisting the wireless transmission, while the multi-relay selection invokes multiple relays for simultaneously forwarding the source transmission to the destination.Physical-Layer Security for Cooperative Relay Networks is designed for researchers and professionals working with networking or wireless security. Advanced-level students interested in networks, wireless, or privacy will also find this book a useful resource.
Distributed Spatial Modulation Based Cooperative Diversity Scheme
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Author : Quang-Trung Hoang
language : en
Publisher:
Release Date : 2019
Distributed Spatial Modulation Based Cooperative Diversity Scheme written by Quang-Trung Hoang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
In this paper, a distributed spatial modulation based cooperative diversity scheme for relay wireless networks is proposed. Where, the space-time block code is exploited to integrate with distributed spatial modulation. Therefore, the interested transmission scheme achieves high diversity gain. By using Monte-Carlo simulation based on computer, we showed that our proposed transmission scheme outperforms state-of-the-art cooperative relaying schemes in terms bit error rate (BER) performance.
Cooperative Communications And Networking
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Author : Y.-W. Peter Hong
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-07-28
Cooperative Communications And Networking written by Y.-W. Peter Hong and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-28 with Technology & Engineering categories.
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.
Broadcasting With Cooperative Diversity In All Wireless Networks
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Author : Gentian Jakllari
language : en
Publisher:
Release Date : 2005
Broadcasting With Cooperative Diversity In All Wireless Networks written by Gentian Jakllari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Antenna arrays categories.
Distributed Coding Schemes For Cooperative Wireless Networks
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Author : Azzam Al-Nahari
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012-08
Distributed Coding Schemes For Cooperative Wireless Networks written by Azzam Al-Nahari and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08 with categories.
Cooperative communications is a new paradigm in the wireless communications area that allows geographically distributed nodes, terminals or sensors in a wireless network to share resources or to cooperate by means of distributed processing. The main goal of cooperative communications is to attain space diversity for suppressing the effects of small or large scale fading channels. In this book, we consider the design of distributed coding schemes and protocols for wireless relay networks in which users cooperate to send their data to the destination, which results in increasing the system reliability via achieving the cooperative diversity.
Cooperative Communications
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Author : Gerhard Kramer
language : en
Publisher: Now Publishers Inc
Release Date : 2007
Cooperative Communications written by Gerhard Kramer and has been published by Now Publishers Inc this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Computers categories.
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 Diversity In Wireless Networks Microform
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Author : Naveen A. Shastry
language : en
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
Release Date : 2005
Cooperative Diversity In Wireless Networks Microform written by Naveen A. Shastry and has been published by Library and Archives Canada = Bibliothèque et Archives Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
For WSNs, a theoretical framework is proposed that quantifies the significant gains in network performance due to cooperative diversity. Specifically, theory is presented to model routing behavior and cooperative relay selection, using this information to predict the energy consumption and lifetime of the network. This thesis considers the issue of cooperative diversity in two types of wireless networks, wireless sensor networks (WSNs) and wireless ad hoc networks (WAHNs). Analysis in previous works have shown that cooperative diversity increases energy efficiency in 3- and 4-node networks. The contribution of this thesis is extending the analysis to more realistic network settings. For WAHNs, since forwarding packets for others is not voluntary, a pricing system is proposed to stimulate the use of cooperative diversity in such networks. The goal of the pricing system is to induce forwarding in which all members of the network benefit and in situations where it is intuitively reasonable.