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Author: Ahmad Abu Al Haija Publisher: ISBN: Category : Languages : en Pages :
Book Description
"In modern and future cellular networks such as Long-Term Evolution-Advanced (LTE-A)and 5G systems, cooperative communication can be deployed as an efficient method to improvesystem performance and meet the high-speed data transmission needs of multimediaservices. This thesis studies cooperation in the multiple access channel (MAC) setting,which includes the relay channel (RC) setting as a special case. These cooperative settingsapply to uplink transmission in cellular networks and form the basis to improve the widenetwork performance.The thesis proposes a time-division half-duplex scheme for the MAC with transmittercooperation (MAC-TC). The proposed scheme divides each transmission frame into threephases with variable durations. The two user equipments (UEs) partially exchange theirinformation in the first two phases, then cooperatively and coherently transmit to the basestation (BS) in the third phase, i.e., each UE performs a partial decode-forward (pDF) ofthe other UE information. The BS then performs joint decoding using the signals receivedin all three phases. After designing the scheme for the discrete memoryless channel (DMC),the thesis applies it to the Gaussian channel, derives its optimal resource allocations formaximum throughput and studies the outage performance over fading links. Comparedwith existing schemes, the proposed scheme improves throughput and outage performance,which makes it appealing for deployment in future cellular networks by utilizing the device-to-device (D2D) and infrastructure modes in the uplink transmission.The proposed scheme is near capacity-achieving when the cooperative links are strongerthan the direct links. Compared to existing schemes, this scheme achieves the same orbetter spectral efficiency with simpler signals and shorter decoding delay. By analyzingthe KKT optimality conditions for the maximum transmission rate, the thesis shows thatas the inter-user link qualities increase, the optimal scheme moves from no cooperation topartial then to full cooperation, in which the users fully exchange their information. Theoptimal power allocation to achieve the maximum throughput is analytically derived.The thesis further formulates the outage probability of the cooperative scheme overRayleigh fading channels assuming full channel state information (CSI) at receivers andlimited CSI at transmitters. Results show that cooperation can significantly reduce outageprobabilities and achieve the full diversity order despite additional outages at the UEs. Thethesis considers the RC setting in detail and analytically derives the outage performance for the coherent pDF relaying. Results show that the proposed scheme outperforms the existingschemes since it employs coherent transmission and joint decoding at the destination.Last, the thesis proposes a MAC with a joint source-destination cooperation (MAC-SDC)scheme that also engages the BS in cooperation by employing quantize-forward relaying.In this scheme, the users exchange their information not only through the cooperativelinks as in the MAC-TC, but also via the feedback links from the BS. Results showachievability improvement especially when the cooperative links are marginally strongerthan direct links. Moreover, for the RC setting, the thesis proves that the proposed schemeasymptotically achieves capacity by reaching the cutset bound as BS power increases." --
Author: Ahmad Abu Al Haija Publisher: ISBN: Category : Languages : en Pages :
Book Description
"In modern and future cellular networks such as Long-Term Evolution-Advanced (LTE-A)and 5G systems, cooperative communication can be deployed as an efficient method to improvesystem performance and meet the high-speed data transmission needs of multimediaservices. This thesis studies cooperation in the multiple access channel (MAC) setting,which includes the relay channel (RC) setting as a special case. These cooperative settingsapply to uplink transmission in cellular networks and form the basis to improve the widenetwork performance.The thesis proposes a time-division half-duplex scheme for the MAC with transmittercooperation (MAC-TC). The proposed scheme divides each transmission frame into threephases with variable durations. The two user equipments (UEs) partially exchange theirinformation in the first two phases, then cooperatively and coherently transmit to the basestation (BS) in the third phase, i.e., each UE performs a partial decode-forward (pDF) ofthe other UE information. The BS then performs joint decoding using the signals receivedin all three phases. After designing the scheme for the discrete memoryless channel (DMC),the thesis applies it to the Gaussian channel, derives its optimal resource allocations formaximum throughput and studies the outage performance over fading links. Comparedwith existing schemes, the proposed scheme improves throughput and outage performance,which makes it appealing for deployment in future cellular networks by utilizing the device-to-device (D2D) and infrastructure modes in the uplink transmission.The proposed scheme is near capacity-achieving when the cooperative links are strongerthan the direct links. Compared to existing schemes, this scheme achieves the same orbetter spectral efficiency with simpler signals and shorter decoding delay. By analyzingthe KKT optimality conditions for the maximum transmission rate, the thesis shows thatas the inter-user link qualities increase, the optimal scheme moves from no cooperation topartial then to full cooperation, in which the users fully exchange their information. Theoptimal power allocation to achieve the maximum throughput is analytically derived.The thesis further formulates the outage probability of the cooperative scheme overRayleigh fading channels assuming full channel state information (CSI) at receivers andlimited CSI at transmitters. Results show that cooperation can significantly reduce outageprobabilities and achieve the full diversity order despite additional outages at the UEs. Thethesis considers the RC setting in detail and analytically derives the outage performance for the coherent pDF relaying. Results show that the proposed scheme outperforms the existingschemes since it employs coherent transmission and joint decoding at the destination.Last, the thesis proposes a MAC with a joint source-destination cooperation (MAC-SDC)scheme that also engages the BS in cooperation by employing quantize-forward relaying.In this scheme, the users exchange their information not only through the cooperativelinks as in the MAC-TC, but also via the feedback links from the BS. Results showachievability improvement especially when the cooperative links are marginally strongerthan direct links. Moreover, for the RC setting, the thesis proves that the proposed schemeasymptotically achieves capacity by reaching the cutset bound as BS power increases." --
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: Y.-W. Peter Hong Publisher: Springer Science & Business Media ISBN: 1441971947 Category : Technology & Engineering Languages : en Pages : 411
Book Description
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.
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: Sailesh Bharati Publisher: Springer ISBN: 3319587218 Category : Technology & Engineering Languages : en Pages : 124
Book Description
This book presents link-layer cooperative frameworks to improve transmission reliability and network throughput of distributed TDMA MAC protocols in vehicular ad hoc networks (VANETs). The main objective of this book is to present link-layer node cooperation schemes to enhance the link-layer performance of vehicular networks, in terms of reliability and system throughput. The authors present approaches proposed for the medium access control (MAC) and node cooperation in VANETs. The authors also cover cooperative ADHOC MAC for point-to-point communication between a pair of source and destination nodes, and cooperative relay broadcasting for broadcast services in this book. The performance of node cooperation frameworks is evaluated via mathematical analysis and computer simulations, in comparison with distributed TDMA MAC protocols without cooperation. The proposed node cooperation frameworks enhance the performance of distributed TDMA MAC and make it more robust to tackle the dynamic networking conditions in VANETs. Furthermore, with cooperation enabled transmission, the performance of distributed TMDA MAC is more suitable to support the wide range of mobile applications and their strict service requirements which is discussed in this book. The proposed node cooperation schemes and distributed cooperation decisions can be extended to wireless systems other than distributed TDMA MAC, such as cellular communication, for vehicular communications introduced in this book. This book is useful for researchers from academia and industry, as well as advanced level students interested in vehicular communication networks. It is also useful for professionals and engineers developing applications that use cooperative wireless communication systems.
Author: Ezio Biglieri Publisher: IOS Press ISBN: 1586037285 Category : Computers Languages : en Pages : 360
Book Description
Surveys general results on multiple-access channels, and gives an overview of the problems of CDMA solutions. This work includes chapters devoted to the information-theoretical aspects of multiple-access communication. It discusses multiple-access techniques and covers coding techniques.
Author: Yan Zhang Publisher: CRC Press ISBN: 1420064703 Category : Computers Languages : en Pages : 518
Book Description
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
Author: Mischa Dohler Publisher: John Wiley & Sons ISBN: 9780470740064 Category : Technology & Engineering Languages : en Pages : 464
Book Description
Facilitating Cooperation for Wireless Systems Cooperative Communications: Hardware, Channel & PHY focuses on issues pertaining to the PHY layer of wireless communication networks, offering a rigorous taxonomy of this dispersed field, along with a range of application scenarios for cooperative and distributed schemes, demonstrating how these techniques can be employed. The authors discuss hardware, complexity and power consumption issues, which are vital for understanding what can be realized at the PHY layer, showing how wireless channel models differ from more traditional models, and highlighting the reliance of PHY algorithm performance on the underlying channel models. Numerous transparent and regenerative relaying protocols are described in detail for a variety of transparent and regenerative cooperative schemes. Key Features: Introduces background, concepts, applications, milestones and thorough taxonomy Identifies the potential in this emerging technology applied to e.g. LTE/WiMAX, WSN Discusses latest wireless channel models for transparent and regenerative protocols Addresses the fundamentals as well as latest emerging PHY protocols Introduces transparent distributed STBC, STTC, multiplexing and beamforming protocols Quantifies regenerative distributed space-time, channel and network coding protocols Explores system optimization, such as distributed power allocation and relay selection Introduces and compares analog and digital hardware architectures Quantifies complexity, memory and power consumption of 3G UMTS & 4G LTE/WiMAX relay Highlights future research challenges within the cooperative communications field This book is an invaluable guide for professionals and researchers in communications fields. It will also be of interest to graduates of communications and electronic engineering courses. It forms part of an entire series dedicated to cooperative wireless systems.
Author: S. G. Abdel Gawad Publisher: ISBN: Category : Languages : en Pages :
Book Description
The concept of cooperative communication has been proposed to improve link capacity, transmission reliability and network coverage in multiuser wireless communication networks. Different from conventional point-to-point and point-to-multipoint communications, cooperative communication allows multiple users or stations in a wireless network to coordinate their packet transmissions and share each other's resources, thus achieving high performance gain and better service coverage. According to the IEEE 802.11 standards, Wireless Local Area Networks (WLANs) can support multiple transmission data rates, depending on the instantaneous channel condition between a source station and an Access Point (AP). In such a multi-rate WLAN, those low data-rate stations will occupy the shared communication channel for a longer period for transmitting a fixed-size packet to the AP, thus reducing the channel efficiency and overall system performance. This thesis addresses this challenging problem in multi-rate WLANs by proposing two cooperative Medium Access Control (MAC) protocols, namely Busy Tone based Cooperative MAC (BTAC) protocol and Cooperative Access with Relay's Data (CARD) protocol. Under BTAC, a low data-rate sending station tries to identify and use a close-by intermediate station as its relay to forward its data packets at higher data-rate to the AP through a two-hop path. In this way, BTAC can achieve cooperative diversity gain in multi-rate WLANs. Furthermore, the proposed CARD protocol enables a relay station to transmit its own data packets to the AP immediately after forwarding its neighbour's packets, thus minimising the handshake procedure and overheads for sensing and reserving the common channel. In doing so, CARD can achieve both cooperative diversity gain and cooperative multiplexing gain. Both BTAC and CARD protocols are backward compatible with the existing IEEE 802.11 standards. New cross-layer mathematical models have been developed in this thesis to study the performance of BTAC and CARD under different channel conditions and for saturated and unsaturated traffic loads. Detailed simulation platforms were developed and are discussed in this thesis. Extensive simulation results validate the mathematical models developed and show that BTAC and CARD protocols can significantly improve system throughput, service delay, and energy efficiency for WLANs operating under realistic communication scenarios.
Author: Gerhard Kramer Publisher: Now Publishers Inc ISBN: 1601980264 Category : Computers Languages : en Pages : 170
Book Description
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.
Author: Ahmad Abu Al Haija
Author: Ahmad Abu Al Haija
Author: K. J. Ray Liu
Author: Y.-W. Peter Hong
Author: Uysal, Murat
Author: Sailesh Bharati
Author: Ezio Biglieri
Author: Yan Zhang
Author: Mischa Dohler
Author: S. G. Abdel Gawad
Author: Gerhard Kramer