Fading And Shadowing In Wireless Systems

Author : P. Mohana Shankar
Publisher : Springer Science & Business Media
Page : 477 pages
File Size : 52,8 Mb
Release : 2011-12-07
Category : Technology & Engineering
ISBN : 9781461403678

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Fading and Shadowing in Wireless Systems by P. Mohana Shankar Pdf

The study of signal transmission and deterioration in signal characteristics as the signal propagates through wireless channels is of great significance. The book presents a comprehensive view of channel degradation arising from fading and shadowing. Various statistical models including simple, hybrid, compound, complex and cascaded ones are presented with detailed derivations along with measures to quantify the deterioration such as the amount of fading, error rates and outage probabilities. The models range from the Rayleigh and Rician through Suzuki, generalized K, cascaded and alpha-mu and similar ones. This is followed by the analysis of mitigation of fading and shadowing through diversity (simple, hybrid, micro- and macro- level) and combining algorithms. The density and distribution functions, error rates and outages are derived and results analyzed to quantify the improvements. The effects of co-channel interference before and after the implementation of diversity are also analyzed. To facilitate easy understanding of the models and analysis, the background information in terms of probability and random variables is presented with relevant derivations of densities of linear and nonlinear transformation of random variables, the sums, products, ratios as well as order statistics of random variables of all types. The book also provides material on digital modems of interest in wireless systems. Thus, the book with 1100+ equations and 350+ Matlab generated figures and tables is an ideal source for students, educators, researchers and professionals in wireless communications allowing access to information currently unavailable.

Author : Anonim
Publisher : Springer
Page : 480 pages
File Size : 53,6 Mb
Release : 2011-12-07
Category : Electronic
ISBN : 1461403685

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Fading and Shadowing in Wireless Systems by Anonim Pdf

Author : Stefan Panic,Mihajlo Stefanovic,Jelena Anastasov,Petar Spalevic
Publisher : CRC Press
Page : 263 pages
File Size : 51,6 Mb
Release : 2013-12-11
Category : Computers
ISBN : 9781466508422

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Fading and Interference Mitigation in Wireless Communications by Stefan Panic,Mihajlo Stefanovic,Jelena Anastasov,Petar Spalevic Pdf

Fading and Interference Mitigation in Wireless Communications will help readers stay up to date with recent developments in the performance analysis of space diversity reception over fading channels in the presence of cochannel interference. It presents a unified method for computing the performance of digital communication systems characterized by a variety of modulation and detection types and channel models. The book includes coverage of multichannel reception in various fading environments, influence of cochannel interference, and macrodiversity reception when channels are simultaneously affected by various types of fading and shadowing.

Author : Ramjee Prasad,Suvra Sekhar Das,Muhammad Imadur Rahman
Publisher : CRC Press
Page : 517 pages
File Size : 51,5 Mb
Release : 2022-09-01
Category : Science
ISBN : 9781000795622

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Adaptive PHY-MAC Design for Broadband Wireless Systems by Ramjee Prasad,Suvra Sekhar Das,Muhammad Imadur Rahman Pdf

The next generation mobile communication networks (4G) have the challenging target of The next generation mobile communication networks (4G) have the challenging target of providing a peak data rate of 1 Gigabit per second local area and 100 Megabit per second wide area. The ability to offer such high data rates in 100MHz bandwidth requires overall a very high spectral efficiency, and hence the need for multi-antenna techniques (MIMO) with spatial multiplexing, fast dynamic link adaptation and packet scheduling, wideband access techniques, and most likely non-contention based spectrum sharing among multiple operators. Many of these required technology components and techniques are well researched and established. Adaptive PHY-MAC Design for Broadband Wireless Systems explains how one can integrate and optimise their use in providing the target cell data rates with high availability. The authors address the ability to cope with interference and enhanced physical layer processing, and simultaneously, the multifaceted system level design. Focus is also on the selection of technology components and techniques, which leads to the highest spectral efficiency and peak data rate availability with reasonable Quality of Service (QoS) support, such as improved outage scenario, reduced delay, guaranteed bit rate, etc.In short, this book will answer questions such as, how individual techniques relate to each other, how can we benefit the gains by suitable combinations of different technologies and how to choose different technological solutions in different scenarios, etc.The next generation mobile communication networks (4G) have the challenging target of The next generation mobile communication networks (4G) have the challenging target of providing a peak data rate of 1 Gigabit per second local area and 100 Megabit per second wide area.

Author : Haesik Kim
Publisher : John Wiley & Sons
Page : 440 pages
File Size : 50,8 Mb
Release : 2015-08-06
Category : Technology & Engineering
ISBN : 9781118759448

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Wireless Communications Systems Design by Haesik Kim Pdf

em style="mso-bidi-font-style: normal;"Wireless Communications Systems Design provides the basic knowledge and methodology for wireless communications design. The book mainly focuses on a broadband wireless communication system based on OFDM/OFDMA system because it is widely used in the modern wireless communication system. It is divided into three parts: wireless communication theory (part I), wireless communication block design (part II), and wireless communication block integration (part III). Written by an expert with various experience in system design (standards, research and development)

Author : David Tse,Pramod Viswanath
Publisher : Cambridge University Press
Page : 598 pages
File Size : 54,5 Mb
Release : 2005-05-26
Category : Computers
ISBN : 0521845270

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Fundamentals of Wireless Communication by David Tse,Pramod Viswanath Pdf

This textbook takes a unified view of the fundamentals of wireless communication and explains cutting-edge concepts in a simple and intuitive way. An abundant supply of exercises make it ideal for graduate courses in electrical and computer engineering and it will also be of great interest to practising engineers.

Author : Sabyasachi Chatterjee,Siladitya Sen
Publisher : LAP Lambert Academic Publishing
Page : 68 pages
File Size : 55,5 Mb
Release : 2013-01
Category : Electronic
ISBN : 3659311073

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Reduction of Shadowing Effects in Dense Urban Wireless Modelling by Sabyasachi Chatterjee,Siladitya Sen Pdf

Wireless communication is the fastest growing segment of the communication industry. Explosive growth of wireless systems coupled with the features of laptop and palmtop computers indicate a bright future for wireless networks of stand-alone systems or larger networking infrastructure. However, many technical challenges remain in designing robust wireless networks that deliver the performance at assured level. In any urban or metropolitan scenario implementations of wireless network propagation models are necessary to determine the characteristic of propagation using a medium. In this book cost231 Walfisch and Ikegami empirical propagation model has been investigated theoretically and a new correction factor has been introduced to improve the path loss factor. Here QualNet 5.0 is used to simulate a given scenario with respect to cost231 WI model and new proposed corrected model is analyzed. With the theoretical and experimental analysis it has been concluded that the limitation of cost231 WI propagation model for shadowing effects of wireless network design in dense urban scenarios, can be minimized with this correction factor.

Author : Asrar U.H. Sheikh
Publisher : Springer Science & Business Media
Page : 750 pages
File Size : 55,6 Mb
Release : 2011-06-27
Category : Science
ISBN : 9781441991522

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Wireless Communications by Asrar U.H. Sheikh Pdf

Wireless communication systems, since their inception in the form of cellular communications, have spread rapidly throughout the western world and the trend is catching on in the developing countries as well. These sys tems have caused revolutionary changes in the way we live. Cellular Commu nications have become important both as means of communication and as a new domain ofcommercial enterprise. Hand held telephones are now rapidly replacing the fixed telephone and in less than twenty years, the number of subscribers has reached nearly three quarters of a billion. In a short span of twenty years, the cellular communications progressed from the first genera tion to the third generation systems, which started operations in Japan on October 1,2001. The first generation wireless technology, which was thought to be obsolete is now being used for fixed wired telephony in several coun tries of Asia, Africa and Latin America. As some commentator said in 1983, the cellular system is the best thing that has happened in telecommunications since the introduction ofcomputers to the masses. This book is written to provide readers with the fundamental concepts ofwireless communications. It is intended for a graduate course on wireless communications but it could be easily adopted at the senior level by skipping material involving difficult mathematical manipulations. The text does not go through the rigorous material on mathematical treatment of electromagnetic waves and propagation, rather it emphasizes more on the practical aspects of this.

Author : Jos H. Weber,Jens Arnbak,Ramjee Prasad
Publisher : IOS Press
Page : 414 pages
File Size : 53,9 Mb
Release : 1994
Category : Computer networks
ISBN : 9051991932

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Wireless Networks by Jos H. Weber,Jens Arnbak,Ramjee Prasad Pdf

The professional fields of Wireless Computer Networks and Personal, Indoor and Mobile Radio Communications have, within a few years, become the fastest growing business area of telecommunications. The papers presented in these volumes on WCN focus on the emerging wireless extensions of intelligent networking and other computer services. The contributions on PIMRC concentrate on the latest developments in radio technologies and network access.

Author : Hongyi Wu,Yi Pan
Publisher : Nova Publishers
Page : 662 pages
File Size : 51,8 Mb
Release : 2008
Category : Computers
ISBN : 1600219446

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Medium Access Control in Wireless Networks by Hongyi Wu,Yi Pan Pdf

Wireless technologies and applications are becoming one of the fastest growing and most promising areas in recent years. To accommodate data transmission by multiple stations sharing the scarce wireless bandwidth, a medium access control (MAC) protocol plays a crucial role in scheduling packet transmission fairly and efficiently. The emerging wireless networks, such as ad-hoc networks, sensor networks or mesh networks, are mostly multi-hop based and in distributed manner, which brings a lot of problems and challenges in designing fine-tuned MAC protocols tailored for modern wireless network. In this book, the authors give complete and in-depth overviews to the classic medium access control algorithms and the related protocols, as well as their applications in various wireless data networks especially the most successful Wireless Local Area Networks (WLAN). The book consists of three major parts. Part I of this book, including Chapters 1-7, is emphasising on the fundamentals of medium access control algorithms and protocols. Chapter 1 provides an introduction to the wireless networks, such as overview of wireless networks, problems and challenges of the wireless networks, and the classifications of MAC protocols as well as the performance metrics. Chapter 2 introduces important collision resolution algorithms applied in medium access controls, for example, the splitting algorithm and the backoff algorithm. Chapter 3 reviews the hybrid access control algorithms that combine both contention and allocation schemes. A series of important collision avoidance schemes are introduced in Chapters 4-7 respectively, with a specific design goal covered in each chapter. Chapter 4 focuses on the multi-channel MAC protocols for collision avoidance; Chapter 5 introduces the concepts of power control and power management in medium access control and how they can be applied in MAC protocol design; Chapter 6 presents how to provide Quality-of- Service (QoS) to multimedia wireless networks, in either centralised or distributed manner; and Chapter 7 explains how the smart antennas can be applied in the medium access control to provide high channel throughput and low packet collision.

Author : Stefan Panic,Mihajlo Stefanovic,Jelena Anastasov,Petar Spalevic
Publisher : CRC Press
Page : 264 pages
File Size : 47,8 Mb
Release : 2013-12-11
Category : Technology & Engineering
ISBN : 9781466508415

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Fading and Interference Mitigation in Wireless Communications by Stefan Panic,Mihajlo Stefanovic,Jelena Anastasov,Petar Spalevic Pdf

The rapid advancement of various wireless communication system services has created the need to analyze the possibility of their performance improvement. Introducing the basic principles of digital communications performance analysis and its mathematical formalization, Fading and Interference Mitigation in Wireless Communications will help you stay up to date with recent developments in the performance analysis of space diversity reception over fading channels in the presence of cochannel interference. The book presents a unified method for computing the performance of digital communication systems characterized by a variety of modulation and detection types and channel models. Explaining the necessary concepts of digital communication system design, the book guides you step by step through the basics of performance analysis of digital communication receivers. Supplying you with the tools to perform an accurate performance evaluation of the proposed communication scenarios, the book includes coverage of multichannel reception in various fading environments, influence of cochannel interference, and macrodiversity reception when channels are simultaneously affected by various types of fading and shadowing. It also includes many numerical illustrations of applications that correspond to practical systems. The book presents a large collection of system performance curves to help researchers and system designers perform their own tradeoff studies. The presented collection of system performances will help you perform trade-off studies among the various communication type/drawback combinations in order to determine the optimal choice considering the available constraints. The concepts covered in this book can be useful across a range of applications, including wireless, satellite, terrestrial, and maritime communications.

Author : Xavier Fernando,Ajmery Sultana,Sattar Hussain,Lian Zhao
Publisher : Springer
Page : 107 pages
File Size : 50,5 Mb
Release : 2018-05-22
Category : Technology & Engineering
ISBN : 9783319739571

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Cooperative Spectrum Sensing and Resource Allocation Strategies in Cognitive Radio Networks by Xavier Fernando,Ajmery Sultana,Sattar Hussain,Lian Zhao Pdf

Cognitive radio networks (CRN) will be widely deployed in the near future, and this SpringerBrief covers some important aspects of it, as well as highlighting optimization strategies in Resource Allocation and Spectrum Sensing in CRNs. The cognitive approach in radio access is introduced in the first part of this SpringerBrief, and then next the benefits of cooperative spectrum sensing are highlighted and a framework for studying it under realistic channel conditions is described. New exact closed-form expressions for average false alarm probability and average detection probability are derived in this scenario. A novel approximation to alleviate the computational complexity of the proposed models are also discussed. Once the spectrum opportunities are identified, efficient and systematic resource allocation (RA) shall be performed. The second part of this SpringerBrief describes the taxonomy for the RA process in CRN. A comprehensive overview of the optimization strategies of the CRN RA is also provided. The device-to-device (D2D) communication scenario is discussed, then as a case study and various optimization strategies for the application of the CR technology in the D2D realm is studied. The application of advanced geometric water-filling (GWF) approach in CRN D2D environment for optimum resource allocation is presented in detail. Numerical results provide more insight quantitatively. Overall, this book is suitable for a wide audience that include students, faculty and researchers in wireless communication area and professionals in the wireless service industry.

Author : Jonathan Rodriguez
Publisher : John Wiley & Sons
Page : 336 pages
File Size : 52,7 Mb
Release : 2015-04-27
Category : Technology & Engineering
ISBN : 9781118867471

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Fundamentals of 5G Mobile Networks by Jonathan Rodriguez Pdf

Fundamentals of 5G Mobile Networks provides an overview of the key features of the 5th Generation (5G) mobile networks, discussing the motivation for 5G and the main challenges in developing this new technology. This book provides an insight into the key areas of research that will define this new system technology paving the path towards future research and development. The book is multi-disciplinary in nature, and aims to cover a whole host of intertwined subjects that will predominantly influence the 5G landscape, including the future Internet, cloud computing, small cells and self-organizing networks (SONs), cooperative communications, dynamic spectrum management and cognitive radio, Broadcast-Broadband convergence , 5G security challenge, and green RF. This book aims to be the first of its kind towards painting a holistic perspective on 5G Mobile, allowing 5G stakeholders to capture key technology trends on different layering domains and to identify potential inter-disciplinary design aspects that need to be solved in order to deliver a 5G Mobile system that operates seamlessly.

Author : Peter Stavroulakis
Publisher : Artech House
Page : 442 pages
File Size : 45,8 Mb
Release : 2003
Category : Computers
ISBN : 1580535747

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Interference Analysis and Reduction for Wireless Systems by Peter Stavroulakis Pdf

This leading-edge resource offers you a new methodology for analyzing and studying the behavior of wireless communication systems in an interference environment. It provides you with modern tools and techniques for use in real-world applications that help you guarantee optimum system performance. The book treats both additive and multiplicative interfering signals, including in-depth descriptions of how these signals behave, regardless of the source.

Author : Ayman ElNashar
Publisher : John Wiley & Sons
Page : 424 pages
File Size : 44,5 Mb
Release : 2018-08-20
Category : Technology & Engineering
ISBN : 9781118938249

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Simplified Robust Adaptive Detection and Beamforming for Wireless Communications by Ayman ElNashar Pdf

This book presents an alternative and simplified approaches for the robust adaptive detection and beamforming in wireless communications. It adopts several systems models including DS/CDMA, OFDM/MIMO with antenna array, and general antenna arrays beamforming model. It presents and analyzes recently developed detection and beamforming algorithms with an emphasis on robustness. In addition, simplified and efficient robust adaptive detection and beamforming techniques are presented and compared with exiting techniques. Practical examples based on the above systems models are provided to exemplify the developed detectors and beamforming algorithms. Moreover, the developed techniques are implemented using MATLAB—and the relevant MATLAB scripts are provided to help the readers to develop and analyze the presented algorithms. em style="mso-bidi-font-style: normal;"Simplified Robust Adaptive Detection and Beamforming for Wireless Communications starts by introducing readers to adaptive signal processing and robust adaptive detection. It then goes on to cover Wireless Systems Models. The robust adaptive detectors and beamformers are implemented using the well-known algorithms including LMS, RLS, IQRD-RLS, RSD, BSCMA, CG, and SD. The robust detection and beamforming are derived based on the existing detectors/beamformers including MOE, PLIC, LCCMA, LCMV, MVDR, BSCMA, and MBER. The adopted cost functions include MSE, BER, CM, MV, and SINR/SNR.