Joint PHY-MAC Cross-Layer Design in Wireless Ad Hoc Networks PDF Download
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Author: Ulrike Korger
Publisher:
ISBN:
Category :
Languages : de
Pages :
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Author: Ulrike Korger
Publisher:
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Category :
Languages : de
Pages :
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Author: Mohamed Ibnkahla
Publisher: CRC Press
ISBN: 135183570X
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
Adaptive techniques play a key role in modern wireless communication systems. The concept of adaptation is emphasized in the Adaptation in Wireless Communications Series through a unified framework across all layers of the wireless protocol stack ranging from the physical layer to the application layer, and from cellular systems to next-generation wireless networks. Adaptation and Cross Layer Design in Wireless Networks is devoted to adaptation in the data link layer, network layer, and application layer. The book presents state-of-the-art adaptation techniques and methodologies, including cross-layer adaptation, joint signal processing, coding and networking, selfishness in mobile ad hoc networks, cooperative and opportunistic protocols, adaptation techniques for multimedia support, self –organizing routing, and tunable security services. It presents several new theoretical paradigms and analytical findings which are supported with various simulation and experimental results. Adaptation in wireless communications is needed in order to achieve high capacity and ubiquitous communications. The current trend in wireless communication systems is to make adaptation dependent upon the state of the relevant parameters in all layers of the system. Focusing on simplified cross layer design approaches, this volume describes advanced techniques such as adaptive resource management, adaptive modulation and coding, 4G communications, QoS, diversity combining, and energy and mobility aware MAC protocols. The first volume in the series, Adaptive Signal Processing in Wireless Communications (cat no.46012) covers adaptive signal processing at the physical layer.
Author: Feng Chen
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Languages : en
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ABSTRACT: This dissertation focuses on cross layer design for network protocols in wireless ad hoc networks. It studies the relationship between link scheduling at medium access control layer and physical or network layer. Link scheduling is a way of achieving the optimal MAC layer throughput while avoiding collisions. In this dissertation, it is modeled using graph theory concepts based on different interference model. MAC layer is served as an anchoring layer in our cross layer design which can collect physical layer information and provide information to network layer. Cross layer design between MAC layer and physical layer or routing layer can provide better overall system performance. The dissertation will discuss how the carrier sensing threshold, a physical layer parameter, impact the link scheduling strategy in order to achieve the optimal aggregate throughput at MAC layer. The dissertation will also investigate the joint routing and link scheduling problem using a graph theory based model. Further more, since solving the above joint design problems is usually NP-hard, we propose polynomial solutions for estimating the bounds for network capacity. In an effort to design MAC layer solution for real systems, we propose an opportunistic MAC for multichannel multiradio wireless networks which utilizes multiradio diversity at physical layer as well.
Author: Christina Comaniciu
Publisher: Springer Science & Business Media
ISBN: 0387277501
Category : Technology & Engineering
Languages : en
Pages : 214
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Book Description
Cross-layer design seeks to enhance the capacity of wireless networks significantly through the joint optimization of multiple layers in the network, primarily the physical (PHY) and medium access control (MAC) layers. Although there are advantages of such design in wireline networks as well, this approach is particularly advantageous for wireless networks due to the properties (such as mobility and interference) that strongly affect performance and design of higher layer protocols. This unique monograph is concerned with the issue of cross-layer design in wireless networks, and more particularly with the impact of node-level multiuser detection on such design. It provides an introduction to this vibrant and active research area insufficiently covered in existing literature, presenting some of the principal methods developed and results obtained to date. Accompanied by numerous illustrations, the text is an excellent reference for engineers, researchers and students working in communication networks.
Author: Guowang Miao
Publisher: Springer
ISBN: 9781461449133
Category : Technology & Engineering
Languages : en
Pages :
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Book Description
Joint Physical-MAC Layer Optimization for Spectral- and Energy-Efficient Wireless Networks provides a deep technical overview of recent advances in joint spectral- and energy-efficient designs for wireless networks. The book explores various types of wireless networks, such as 3G/4G cellular, ad-hoc wireless networks, and wireless local area networks. The authors discuss cross-layer design for joint spectrum- and energy-efficiency, as well as green network design that achieves high network performance. This book introduces state-of-the-art design and resource management technologies to improve both spectral and energy efficiencies of various wireless systems.
Author: Ana I. Perez-Neira
Publisher: Academic Press
ISBN: 0080920888
Category : Technology & Engineering
Languages : en
Pages : 188
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Book Description
Cross-Layer Resource Allocation in Wireless Communications offers practical techniques and models for the design and optimisation of cross-layer resource allocation – one of the hottest topics in wireless communications. Resource allocation in wireless networks is traditionally approached either through information theory or communications networks. To break down the barriers between these distinct approaches, this book bridges the physical and network layers by providing cross-layer resource allocation techniques, models, and methodologies. Its unique approach allows optimisation of network resources and will enable engineers to improve signal quality, enhance network and spectrum utilization, increase throughput, and solve the problem of shadowing. Topics covered include different views of spectral efficiency, the role of spatial diversity, of delay in resource allocation, and possible extensions to OFDMA systems. This will be an ideal reference on cross-layer resource allocation between the PHY and MAC layers for R&D and network design engineers and researchers in universities dealing with sensor networks and cognitive systems. - Gives a full description of the characteristics of the PHY layer that promote efficient resource allocation strategies - Gives special emphasis on cross-layer design for spatial diversity schemes - Provides a framework for interaction between the PHY and MAC layers, their parameters of performance and their relationship - Presents resource allocation as a cross-layer design based on an optimization of MAC layer parameters with an accurate model of the PHY layer
Author: Christina Comaniciu
Publisher: Springer
ISBN: 9780387503677
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Cross-layer design seeks to enhance the capacity of wireless networks significantly through the joint optimization of multiple layers in the network, primarily the physical (PHY) and medium access control (MAC) layers. Although there are advantages of such design in wireline networks as well, this approach is particularly advantageous for wireless networks due to the properties (such as mobility and interference) that strongly affect performance and design of higher layer protocols. This unique monograph is concerned with the issue of cross-layer design in wireless networks, and more particularly with the impact of node-level multiuser detection on such design. It provides an introduction to this vibrant and active research area insufficiently covered in existing literature, presenting some of the principal methods developed and results obtained to date. Accompanied by numerous illustrations, the text is an excellent reference for engineers, researchers and students working in communication networks.
Author: Rashvand, Habib F.
Publisher: IGI Global
ISBN: 1466609613
Category : Computers
Languages : en
Pages : 656
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Book Description
Although the existing layering infrastructure--used globally for designing computers, data networks, and intelligent distributed systems and which connects various local and global communication services--is conceptually correct and pedagogically elegant, it is now well over 30 years old has started create a serious bottleneck. Using Cross-Layer Techniques for Communication Systems: Techniques and Applications explores how cross-layer methods provide ways to escape from the current communications model and overcome the challenges imposed by restrictive boundaries between layers. Written exclusively by well-established researchers, experts, and professional engineers, the book will present basic concepts, address different approaches for solving the cross-layer problem, investigate recent developments in cross-layer problems and solutions, and present the latest applications of the cross-layer in a variety of systems and networks.
Author: Ning Yang
Publisher:
ISBN:
Category :
Languages : en
Pages :
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ABSTRACT: To improve the performance for wireless networks, we implemented a congestion-aware cross-layer design in NS-2. The MAC layer adaptively selects a transmission data rate based on the channel signal strength information from physical layer and congestion information from network layer. The MAC layer utilization gathered at MAC layer is sent to DSR as a congestion aware routing metric for optimal route discovery. We modified the source codes of 802.11 MAC layer and DSR protocol. The simulations show that rate adaptation in MAC layer improves the network performance in terms of throughput, delivery ratio, and end-to-end delay; using congestion information from MAC layer in routing discovery improves the performance of the network benefited from overall network load balance.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
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Book Description
The layered architecture based on OSI model has been widely used in wired networks. Due to the dynamics of wireless medium and the node mobility, many special problems appear in wireless networks, which prevent the conventional layered architecture from functioning optimally in wireless environment. In this thesis, we study the wireless networks from different perspectives. Our objective is to systematically develop network protocols and architecture to address various limitations of wireless systems by assuming a cross-layer approach. Firstly, we develop an energy consumption model for wireless ad hoc networks. In existing work, transmission power is commonly used to represent energy consumption cost. In this study, we analyze possible energy consumptions in physical layer, MAC layer (such as signaling packets), and upper layers (such as end-to-end retransmission), and propose more accurate models to capture the energy consumption cost due to different factors. Secondly, based on the energy consumption model, we design an energy efficient routing protocol. The existing energy efficient routing protocols only focus on the search of the most energy efficient path. However, there are many problems in these protocols, including broadcast storm issue, long setup delay, and poor performance in mobility scenario. In this study, we propose an efficient method for estimating the accurate link cost, a quick path searching scheme to find the energy efficient path, and an efficient maintenance scheme to adjust the path according to the environment. Thirdly, we perform the cross-layer design for multiple-channel multiple-interface network to improve the throughput. Current MAC and routing protocols are mainly developed for only one channel and the existing wireless devices are equipped with only one wireless interface. In this study, we design a unified MAC and routing framework to exploit the benefits enabled by the multiple channels to improve the capacity of ad hoc networks. Our joint channel assignment and routing scheme searches for an efficient transmission path, while taking into account the limited number of channels/interfaces, local topology information, and link rate diversity. Our scheduling scheme at MAC layer coordinates transmissions within the vicinity over a short time scale to maximize channel usage and avoid collision among nodes sharing the same channel. The scheduling scheme complemented with prioritized transmitting will also coordinate interface switching to avoid unnecessary switching delay, support load balancing, reduce the broadcast delay and further improve throughput in a multi-channel multi-interface environment.
