Physical Layer Design in Wireless Sensor Networks PDF Download

Author: Nuo Chen
Publisher:
ISBN:
Category : Wireless sensor networks
Languages : en
Pages : 150

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Book Description

Author: Ian F. Akyildiz
Publisher: John Wiley & Sons
ISBN: 0470515198
Category : Technology & Engineering
Languages : en
Pages : 520

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Book Description
This book presents an in-depth study on the recent advances in Wireless Sensor Networks (WSNs). The authors describe the existing WSN applications and discuss the research efforts being undertaken in this field. Theoretical analysis and factors influencing protocol design are also highlighted. The authors explore state-of-the-art protocols for WSN protocol stack in transport, routing, data link, and physical layers. Moreover, the synchronization and localization problems in WSNs are investigated along with existing solutions. Furthermore, cross-layer solutions are described. Finally, developing areas of WSNs including sensor-actor networks, multimedia sensor networks, and WSN applications in underwater and underground environments are explored. The book is written in an accessible, textbook style, and includes problems and solutions to assist learning. Key Features: The ultimate guide to recent advances and research into WSNs Discusses the most important problems and issues that arise when programming and designing WSN systems Shows why the unique features of WSNs – self-organization, cooperation, correlation -- will enable new applications that will provide the end user with intelligence and a better understanding of the environment Provides an overview of the existing evaluation approaches for WSNs including physical testbeds and software simulation environments Includes examples and learning exercises with a solutions manual; supplemented by an accompanying website containing PPT-slides. Wireless Sensor Networks is an essential textbook for advanced students on courses in wireless communications, networking and computer science. It will also be of interest to researchers, system and chip designers, network planners, technical mangers and other professionals in these fields.

Author: Raja Jurdak
Publisher: Springer Science & Business Media
ISBN: 0387390235
Category : Technology & Engineering
Languages : en
Pages : 270

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Book Description
This book explores the optimization potential of cross-layer design approaches for wireless ad hoc and sensor network performance, covering both theory and practice. A theoretical section provides an overview of design issues in both strictly layered and cross-layer approaches. A practical section builds on these issues to explore three case studies of diverse ad hoc and sensor network applications and communication technologies.

Author: Joseph Tsoi
Publisher:
ISBN:
Category : Application-specific integrated circuits
Languages : en
Pages : 198

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Book Description
A wireless sensor network is a network of sensors that transmits information wirelessly back to a controller. It provides a powerful tool for the monitoring of conditions in a large area via any number of sensor nodes. Traditionally such a network is limited to receiving information passively from the sensors, but with the progress of technology, wireless sensor networks have become increasingly powerful. The advances in electronic miniaturisation and wireless communications have extended the ability of the network controller node to communicate and thus regulate the activities of the sensor nodes. This has opened up a diverse range of possible applications for wireless sensor networks. The key to the functions of a wireless network lies with the wireless communications system. The transceiver controls the transmission of information on the one hand, while serving to capture and make sense of transmitted information on the other. Thus a low power consumption transceiver design based on the modulation technique of binary phase shift keying, has been developed. Furthermore, to analyse the performance of the designed system, models of the communications environment is developed. Based on the type of environments under which wireless networks could be expect to operate, an additive white Gaussian noise model of the channel and a Rayleigh flat fading model has been developed. The proposed transceiver is evaluated within this modelled environment and shows promising results in terms of accuracy and transmission speed. Base on the success of the design in software based modelling, the proposed transceiver is then implemented on a hardware level using field-programmable gate arrays and the VHDL hardware description language. The resulting system is also analysed using models of the environment, and produced satisfactory performances.

Author: Ananthram Swami
Publisher: John Wiley & Sons
ISBN: 9780470061817
Category : Technology & Engineering
Languages : en
Pages : 416

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Book Description
A wireless sensor network (WSN) uses a number of autonomous devices to cooperatively monitor physical or environmental conditions via a wireless network. Since its military beginnings as a means of battlefield surveillance, practical use of this technology has extended to a range of civilian applications including environmental monitoring, natural disaster prediction and relief, health monitoring and fire detection. Technological advancements, coupled with lowering costs, suggest that wireless sensor networks will have a significant impact on 21st century life. The design of wireless sensor networks requires consideration for several disciplines such as distributed signal processing, communications and cross-layer design. Wireless Sensor Networks: Signal Processing and Communications focuses on the theoretical aspects of wireless sensor networks and offers readers signal processing and communication perspectives on the design of large-scale networks. It explains state-of-the-art design theories and techniques to readers and places emphasis on the fundamental properties of large-scale sensor networks. Wireless Sensor Networks: Signal Processing and Communications : Approaches WSNs from a new angle – distributed signal processing, communication algorithms and novel cross-layer design paradigms. Applies ideas and illustrations from classical theory to an emerging field of WSN applications. Presents important analytical tools for use in the design of application-specific WSNs. Wireless Sensor Networks will be of use to signal processing and communications researchers and practitioners in applying classical theory to network design. It identifies research directions for senior undergraduate and graduate students and offers a rich bibliography for further reading and investigation.

Author: Habib M. Ammari
Publisher: Springer Science & Business Media
ISBN: 3642400094
Category : Technology & Engineering
Languages : en
Pages : 826

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Book Description
During the last one and a half decades, wireless sensor networks have witnessed significant growth and tremendous development in both academia and industry. “The Art of Wireless Sensor Networks: Volume 1: Fundamentals” focuses on the fundamentals concepts in the design, analysis, and implementation of wireless sensor networks. It covers the various layers of the lifecycle of this type of network from the physical layer up to the application layer. Its rationale is that the first volume covers contemporary design issues, tools, and protocols for radio-based two-dimensional terrestrial sensor networks. All the book chapters in this volume include up-to-date research work spanning various classic facets of the physical properties and functional behavior of wireless sensor networks, including physical layer, medium access control, data routing, topology management, mobility management, localization, task management, data management, data gathering, security, middleware, sensor technology, standards, and operating systems. This book will be an excellent source of information for both senior undergraduate and graduate students majoring in computer science, computer engineering, electrical engineering, or any related discipline. In addition, computer scientists, researchers, and practitioners in both academia and industry will find this book useful and interesting.

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: Nitaigour P. Mahalik
Publisher: Springer Science & Business Media
ISBN: 3540373667
Category : Technology & Engineering
Languages : en
Pages : 520

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Book Description
This book incorporates a selection of research and development papers. Its scope is on history and background, underlying design methodology, application domains and recent developments. The readers will be able to understand the underlying technology, philosophy, concepts, ideas, and principles, with regard to broader areas of sensor network. Aspects of sensor network and experimental results have been presented in proper order.

Author: Xinsheng Xia
Publisher: ProQuest
ISBN: 9780549319924
Category : Electrical engineering
Languages : en
Pages :

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Book Description
Cross-layer design is an efficient approach to enhance energy efficiency and Quality of Service (QoS) in wireless ad hoc sensor networks. This dissertation will focus on the cross-layer issues and approaches. It will also discuss the latency-aware and energy efficiency tradeoffs and the packets transmission in the rear part of the dissertation. Firstly, we will analyze the cross-layer design for wireless sensor networks based on the virtual MIMO techniques. We will coordinate the physical layer, the MAC layer and the network layer for cross-layer evaluation. Performance analysis and simulation results show that throughput and packet loss ratio will have different performances compared with only considering the MIMO scheme in the physical layer as the increase of the number of transmitters. Secondly, we will discuss the bottom-up optimization for cross-layer design. We used the fuzzy logic system (FLS) to coordinate the physical layer, the data-link layer and the application layer for cross-layer design. Simulation results show that the cross-layer design can reduce the average delay, increase the throughput and extend the network lifetime. The network performance parameters could also keep stability after the cross-layer optimization. Thirdly, we extended the FLS application in cross-layer design from Type-1 to Type-2. We demonstrated that type-2 fuzzy membership function (MF), i.e., the Gaussian MFs with uncertain variance is most appropriate to model BER and MAC layer service time. We used the forecasted transmission delay to adjust the transmission power, and it showed that the interval type-2 FLS performed much better than a type-1 FLS, and FLSs performed better than back-prop NN in terms of energy consumption, average delay and throughput. Also, we obtained the performance bound based on the actual transmission delay. Finally, we applied a image as the real service in WSNs. We considered cross-layer design for image transmission in WSNs. We combined the application layer, the MAC layer and the physical layer together. According to analysis and simulation, there were tradeoffs between QoS and energy consumption for both high priority service and low priority service. Application level QoS was applied to evaluate the cross-layer design for WSNs. Two other works were discussed in this dissertation. One is the latency-aware and energy efficiency tradeoffs for wireless sensor networks. Latency and energy efficiency are two important parameters to evaluate the WSNs. The FLS is applied to the nodes selection. In contrast with the cases that only consider one descriptor, the FLS application can manage the delay/energy tradeoffs to meet the network performance requirements. Another work discussed is "Packets Transmission in wireless sensor networks: interference, energy and delay-aware approach". In the WSN, the interference will affect the packets transmission. We proposed FLS in the optimization of SIR threshold selection. Average delay and distance of a node to the source node are selected as antecedents for the FLS. The output of FLS provided adjusting factors for the SIR threshold. Simulation results showed the fuzzy optimization could achieve a better network efficiency, reduce the average delay and extend the network lifetime.

Author: Liang Song
Publisher:
ISBN: 9780494157961
Category :
Languages : en
Pages : 352

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Book Description
As an effort toward the standardization, we further propose the potential universal architecture platform EWI (Embedded Wireless Interconnect), in wireless sensor networks, for replacing the existing OSI paradigm. EWI is built on two layers, which are Wireless Link layer and System layer, respectively. Studies from both experiential and theoretical perspectives are then considered for EWI. In wireless sensor networks, the optimization for lower energy consumption under application specific network QoS (Quality of Service) requirements, introduces a tremendous impetus to integrate multiple OSI (Open Systems Interconnect) layers. In the dissertation, we show that the optimization leads to cross layer design from the two ends, which are the Physical layer and the Application layer, respectively. Starting from the Application layer, we study LESOP (Low Energy Self Organizing Protocol) for target tracking in dense wireless sensor networks. The application QoS under consideration is the target tracking error, and a QoS knob is utilized to control the tradeoff between target tracking error and network energy consumption. Direct connections are found between the top Application layer and the bottom MAC (Medium Access Control)/Physical layers. Moreover, unlike the classical OSI paradigm of communication networks, Transport and Network layers are excluded in LESOP to simplify the protocol stack. Starting from the Physical layer, we first concentrate on the probability of successful radio packet delivery. By exploiting the tradeoff between this probability and network energy consumption, CTP-SN (Cooperative Transmission Protocol for Sensor Networks) shows that the sensor nodes cooperative radio transmission reduces the outage probability exponentially when the nodes density increases. In MSSN (Sensor Networks with Mobile Sinks), on the other hand, the probability of successful information retrieval on the mobile sink is under consideration. Optimal and suboptimal transmission scheduling algorithms are then studied for MSSN, by exploiting the particular tradeoff. In both studies, optimizations lead to compound Link layer and Physical layer design.