Physical Layer Aware Algorithms and Protocols for Wireless Networks PDF Download

Author: Vivek Raghunathan
Publisher: ProQuest
ISBN: 9780549344728
Category :
Languages : en
Pages : 197

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Book Description
Our candidate stack uses traffic adaptive multipath routing to guide packets probabilistically around network bottlenecks, and automatically create interference-aware routes. Recognizing that theoretical arguments require a cross layer re-design of TCP taking wireless interference into account, our work suggests the use of in-network congestion control to automatically adapt flow rates inside the network.

Author: Gautam Kulkarni
Publisher:
ISBN:
Category : Local area networks (Computer networks)
Languages : en
Pages : 282

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Book Description
Dissertation presents various physical-layer driven scheduling algorithms and protocols for emerging wireless network technologies such as mesh networks and high-throughput LANs.

Author: Amiya Nayak
Publisher: John Wiley & Sons
ISBN: 9780470570500
Category : Technology & Engineering
Languages : en
Pages : 316

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Book Description
This timely book offers a mixture of theory, experiments, and simulations that provides qualitative and quantitative insights in the field of sensor and actuator networking. The chapters are selected in a way that makes the book comprehensive and self-contained. It covers a wide range of recognized problems in sensor networks, striking a balance between theoretical and practical coverage. The book is appropriate for graduate students and practitioners working as engineers, programmers, and technologists.

Author: Mohamed Ibnkahla
Publisher: CRC Press
ISBN: 1420046101
Category : Technology & Engineering
Languages : en
Pages : 526

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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: Mythili Vutukuru
Publisher:
ISBN:
Category :
Languages : en
Pages : 134

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Book Description
With wireless devices becoming ubiquitous, the problem of designing high performance and reliable wireless networks is of great importance today. Wireless links are characterized by a rapidly varying channel, requiring transmitters to dynamically adapt their transmit bit rate. The broadcast nature of radio also necessitates the use of medium access protocols to arbitrate access among competing transmitters and reduce losses due to interference, while enabling successful concurrent transmissions. We observe that the problems with existing bit rate adaptation and medium access protocols stem from insufficient information about the wireless channel at the link layer. This dissertation makes two contributions: (i) a redesign of the interface between the physical and link layers in wireless networks to expose more information about the wireless channel to the link layer, and (ii) the design and evaluation of new link-layer protocols that improve throughput by using information about the channel delivered via the new interface. In today's network architecture, the physical layer (PHY) delivers received frames and per-frame signal strength measurements to the link layer. This dissertation proposes two enhancements to this interface: the PHY streams bits to the link layer as soon as they are decoded and before the entire frame reception completes, and it computes and exports SoftPHY hints with each decoded bit. The SoftPHY hint of a bit indicates the PHY's confidence that the decoded bit is correct. We show that the SoftPHY hints of a received frame can be used to estimate the bit error rate (BER) of the wireless channel faster and with more accuracy than with existing methods. We develop the SoftRate bit rate adaptation protocol that uses this BER computed from SoftPHY hints to pick transmit bit rates and improves throughput by 2 x over existing protocols. The streaming PHY interface enables the link layer to learn about the current transmission on the air by decoding headers before frame reception completes. The SoftCMAP and CMAP protocols make smart medium access decisions using this knowledge of ongoing transmissions along with a distributed map of conflicting transmissions, and improve aggregate network throughput by up to 50% by increasing the number of successful concurrent transmissions.

Author: Dong Zheng
Publisher:
ISBN:
Category : Electronic data processing
Languages : en
Pages : 448

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Book Description

Author: Gopal Pandurangan
Publisher: Springer Science & Business Media
ISBN: 3642146538
Category : Computers
Languages : en
Pages : 381

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Book Description
This book constitutes the refereed proceedings of the 5th Annual International Conference on Wireless Algorithms, Systems, and Applications, WASA 2010, held in Beijing, China, in August 2010. The 19 revised full papers and 10 revised short papers presented together with 18 papers from 4 workshops were carefully reviewed and selected from numerous submissions. The papers are organized in topica sections on topology control and coverage, theoretical foundations, energy-aware algorithms and protocol design, wireless sensor networks and applications, applications and experimentation, scheduling and channel assignment, coding, information theory and security, security of wireless and ad-hoc networks, data management and network control in wireless networks, radar and sonar sensor networks, as well as compressive sensing for communications and networking.

Author: Azzedine Boukerche
Publisher: John Wiley & Sons
ISBN: 0470396377
Category : Technology & Engineering
Languages : en
Pages : 520

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Book Description
Learn the fundamental algorithms and protocols for wireless and mobile ad hoc networks Advances in wireless networking and mobile communication technologies, coupled with the proliferation of portable computers, have led to development efforts for wireless and mobile ad hoc networks. This book focuses on several aspects of wireless ad hoc networks, particularly algorithmic methods and distributed computing with mobility and computation capabilities. It covers everything readers need to build a foundation for the design of future mobile ad hoc networks: Establishing an efficient communication infrastructure Robustness control for network-wide broadcast The taxonomy of routing algorithms Adaptive backbone multicast routing The effect of inference on routing Routing protocols in intermittently connected mobile ad hoc networks and delay tolerant networks Transport layer protocols ACK-thinning techniques for TCP in MANETs Power control protocols Power saving in solar powered WLAN mesh networks Reputation and trust-based systems Vehicular ad hoc networks Cluster interconnection in 802.15.4 beacon enabled networks The book is complemented with a set of exercises that challenge readers to test their understanding of the material. Algorithms and Protocols for Wireless and Mobile Ad Hoc Networks is appropriate as a self-study guide for electrical engineers, computer engineers, network engineers, and computer science specialists. It also serves as a valuable supplemental textbook in computer science, electrical engineering, and network engineering courses at the advanced undergraduate and graduate levels.

Author: Mohammad Ilyas
Publisher: CRC Press
ISBN: 1351836153
Category : Technology & Engineering
Languages : en
Pages : 975

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Book Description
A relative newcomer to the field of wireless communications, ad hoc networking is growing quickly, both in its importance and its applications. With rapid advances in hardware, software, and protocols, ad hoc networks are now coming of age, and the time has come to bring together into one reference their principles, technologies, and techniques. The Handbook of Ad Hoc Wireless Networks does exactly that. Experts from around the world have joined forces to create the definitive reference for the field. From the basic concepts, techniques, systems, and protocols of wireless communication to the particulars of ad hoc network routing methods, power, connections, traffic management, and security, this handbook covers virtually every aspect of ad hoc wireless networking. It includes a section that explores several routing methods and protocols directly related to implementing ad hoc networks in a variety of applications. The benefits of ad hoc wireless networks are many, but several challenges remain. Organized for easy reference, The Handbook of Ad Hoc Wireless Networks is your opportunity to gain quick familiarity with the state of the art, have at your disposal the only complete reference on the subject available, and prepare to meet the technological and implementation challenges you'll encounter in practice.

Author: Ivan Stojmenovic
Publisher: John Wiley & Sons
ISBN: 0471462985
Category : Computers
Languages : en
Pages : 664

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Book Description
The huge and growing demand for wireless communication systems has spurred a massive effort on the parts of the computer science and electrical engineering communities to formulate ever-more efficient protocols and algorithms. Written by a respected figure in the field, Handbook of Wireless Networks and Mobile Computing is the first book to cover the subject from a computer scientist's perspective. It provides detailed practical coverage of an array of key topics, including cellular networks, channel assignment, queuing, routing, power optimization, and much more.