[PDF] Performance Analysis Of Cognitive Radio Networks For Resource Sharing eBook

Author : Kamal Chapagain
Publisher : LAP Lambert Academic Publishing
Page : 64 pages
File Size : 25,12 MB
Release : 2014-10-07
Category :
ISBN : 9783659610707

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In cognitive radio system, secondary users are queued when primary users are utilizing its own channel. In that case secondary transmitters are idle and waiting for that channel to be freed. If so, why not use that idle secondary transmitter for primary users as helping hands by transmitting primary's data. This book explore the scarcity and management of current spectrum issue and proper management in three distinct methodologies. Firstly, Field surveying of spectrum within the range of 0.1 GHz to 3 GHz is done for finding white space. Secondly, white space is managed using user friendly graphical environment programmed in Matlab. Finally, performance is increased by reducing waiting delay in queue for secondary users. Sharing 50% of primary users' data by secondary transmitter, performance is increased up to 41% based on traffic load of incoming data on server and better on high traffic. Wireless Regional Area Network IEEE 802.22 parameters with data rate 24 Mbps is used for simulation in Matlab.

Author : Chee Wei Tan
Publisher :
Page : 331 pages
File Size : 30,96 MB
Release : 2018
Category : Cognitive radio networks
ISBN : 9781536130683

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Over the past two decades, there have been rapid and significant developments in the field of wireless networking, especially with the emergence of wireless cognitive radio network technologies. There are, however, fundamental limits to communications and radio resource is scarce in the face of demand. This gives rise to new challenges in jointly managing resource allocation and interference management in a cognitive manner. The first cognitive radio wireless standard, IEEE 802.22, was only published in 2011, whereby white space referring to the unused frequency spectrums that are location-specific in television channels can be identified for use by other devices in a cognitive radio network. Recently, the U.S. Defense Advanced Research Projects Agency has also recognized the importance of wireless cognitive radio network technologies in military and civilian applications, and organized the 2017 DARPA Spectrum Collaboration Challenge to spur new ideas and experimentation to overcome spectrum scarcity. The need to cognitively access the increasingly-crowded electromagnetic spectrum has never been greater. This book, written by a team of leading experts, aims at providing the readers with a series of tutorials on a variety of cognitive radio network technologies ranging from efficient dynamic spectrum sharing and interference management to optimal resource allocation and to fundamental limits in communications. Emphasis is on cutting edge research in theoretical tools, algorithms and engineering insights to provide guiding principles, making this an ideal reference book.

Author : F. Richard Yu
Publisher : Springer Science & Business Media
Page : 491 pages
File Size : 36,7 MB
Release : 2011-09-28
Category : Technology & Engineering
ISBN : 1441961720

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Cognitive radios (CR) technology is capable of sensing its surrounding environment and adapting its internal states by making corresponding changes in certain operating parameters. CR is envisaged to solve the problems of the limited available spectrum and the inefficiency in the spectrum usage. CR has been considered in mobile ad hoc networks (MANETs), which enable wireless devices to dynamically establish networks without necessarily using a fixed infrastructure. The changing spectrum environment and the importance of protecting the transmission of the licensed users of the spectrum mainly differentiate classical MANETs from CR-MANETs. The cognitive capability and re-configurability of CR-MANETs have opened up several areas of research which have been explored extensively and continue to attract research and development. The book will describe CR-MANETs concepts, intrinsic properties and research challenges of CR-MANETs. Distributed spectrum management functionalities, such as spectrum sensing and sharing, will be presented. The design, optimization and performance evaluation of security issues and upper layers in CR-MANETs, such as transport and application layers, will be investigated.

Author : Budati Anil Kumar
Publisher : CRC Press
Page : 147 pages
File Size : 33,72 MB
Release : 2021-12-09
Category : Technology & Engineering
ISBN : 1000488543

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The scarcity of radio spectrum is one of the most urgent issues at the forefront of future network research that is yet to be addressed. To address the problem of spectrum usage efficiency, the cognitive radio (CR) concept was proposed. The challenges of employing CRs include ensuring secure device operations and data transmission with advanced computing techniques. Successful development of CR systems will involve attainment of the following key objectives: Increasing the rate and capacity of CR-based networks How the power is utilized in CR hardware devices with CMOS circuits How the framework is needed in complex networks Vedic multipliers on CR networks Spatial analysis and clustering methods for traffic management To transmit a large volume of data like video compression Swarm optimization algorithms Resource sharing in peer-to-peer networking This book gathers the latest research works focusing on the issues, challenges, and solutions in the field of Cognitive Radio Networks, with various techniques. The chapters in this book will give solutions to the problems that Industry 4.0 faces, and will be an essential resource for scholars in all areas of the field.

Author : Ghanshyam Singh
Publisher : John Wiley & Sons
Page : 384 pages
File Size : 34,64 MB
Release : 2021-05-27
Category : Technology & Engineering
ISBN : 1119665442

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SPECTRUM SHARING IN COGNITIVE RADIO NETWORKS Discover the latest advances in spectrum sharing in wireless networks from two internationally recognized experts in the field Spectrum Sharing in Cognitive Radio Networks: Towards Highly Connected Environments delivers an in-depth and insightful examination of hybrid spectrum access techniques with advanced frame structures designed for efficient spectrum utilization. The accomplished authors present the energy and spectrum efficient frameworks used in high-demand distributed architectures by relying on the self-scheduled medium access control (SMC-MAC) protocol in cognitive radio networks. The book begins with an exploration of the fundamentals of recent advances in spectrum sharing techniques before moving onto advanced frame structures with spectrum accessing approaches and the role of spectrum prediction and spectrum monitoring to eliminate interference. The authors also cover spectrum mobility, interference, and spectrum management for connected environments in substantial detail. Spectrum Sharing in Cognitive Radio Networks: Towards Highly Connected Environments offers readers a recent and rational theoretical mathematical model of spectrum sharing strategies that can be used for practical simulation of future generation wireless communication technologies. It also highlights ongoing trends, revealing fresh research outcomes that will be of interest to active researchers in the area. Readers will also benefit from: An inclusive study of connected environments, 3GPP Releases, and the evolution of wireless communication generations with a discussion of advanced frame structures and access strategies in cognitive radio networks A treatment of cognitive radio networks using spectrum prediction and monitoring techniques An analysis of the effects of imperfect spectrum monitoring on cognitive radio networks An exploration of spectrum mobility in cognitive radio networks using spectrum prediction and monitoring techniques An examination of MIMO-based CR-NOMA communication systems for spectral and interference efficient designs Perfect for senior undergraduate and graduate students in Electrical and Electronics Communication Engineering programs, Spectrum Sharing in Cognitive Radio Networks: Towards Highly Connected Environments will also earn a place in the libraries of professional engineers and researchers working in the field, whether in private industry, government, or academia.

Author : Preston Marshall
Publisher : Artech House
Page : 479 pages
File Size : 40,53 MB
Release : 2010
Category : Science
ISBN : 1608070980

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Cognitive radio – a paradigm for wireless communication in which either a network or a wireless node changes its transmission or reception parameters to communicate more efficiently and avoid interference -- is one of the most exciting emerging fields in communications technology. Taking an integrated development approach, this cutting-edge book provides you with clear methods for performing quantitative analysis of cognitive radio techniques in a variety of environments. This detailed reference presents a quantitative structure that helps you determine the capability of cognitive radio to address a number of constraints of current radio design. Critical to understanding the operation of cognitive radio, the book develops an analytic model for a range of spectrum environments. Moreover, this unique resource offers you unique insight into the application of dynamic spectrum access (DSA) to improve the performance of all classes of wireless devices. DVD Included! Contains sample cognitive radio environments and closed form approximations of these environments in MATLAB file format. This data enables you to reproduce the analysis provided in the book, perform the exercises in each chapter, and extend the work through independent investigation and research.

Author : Zhe Wang
Publisher : Springer
Page : 70 pages
File Size : 21,96 MB
Release : 2015-03-18
Category : Technology & Engineering
ISBN : 3319155423

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This Springer Brief investigates spectrum sharing with limited channel feedback in various cognitive radio systems, such as point-to-point, broadcast scheduling and ad-hoc networks. The design aim is to optimally allocate the secondary resources to improve the throughput of secondary users while maintaining a certain quality of service for primary users. The analytical results of optimal resource allocation are derived via optimization theory and are verified by the numerical results. The results demonstrate the secondary performance is significantly improved by limited feedback and is further improved by more feedback bits, more secondary receivers and more primary side information.

Author : Shweta Pandit
Publisher : Springer
Page : 270 pages
File Size : 30,89 MB
Release : 2017-04-12
Category : Technology & Engineering
ISBN : 3319531476

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This book discusses the use of the spectrum sharing techniques in cognitive radio technology, in order to address the problem of spectrum scarcity for future wireless communications. The authors describe a cognitive radio medium access control (MAC) protocol, with which throughput maximization has been achieved. The discussion also includes use of this MAC protocol for imperfect sensing scenarios and its effect on the performance of cognitive radio systems. The authors also discuss how energy efficiency has been maximized in this system, by applying a simple algorithm for optimizing the transmit power of the cognitive user. The study about the channel fading in the cognitive user and licensed user and power adaption policy in this scenario under peak transmit power and interference power constraint is also present in this book.

Author : Peyman Setoodeh
Publisher : John Wiley & Sons
Page : 243 pages
File Size : 10,17 MB
Release : 2017-06-28
Category : Technology & Engineering
ISBN : 1119405831

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A comprehensive treatment of cognitive radio networks and the specialized techniques used to improve wireless communications The human brain, as exemplified by cognitive radar, cognitive radio, and cognitive computing, inspires the field of Cognitive Dynamic Systems. In particular, cognitive radio is growing at an exponential rate. Fundamentals of Cognitive Radio details different aspects of the human brain and provides examples of how it can be mimicked by cognitive dynamic systems. The text offers a communication-theoretic background, including information on resource allocation in wireless networks and the concept of robustness. The authors provide a thorough mathematical background with data on game theory, variational inequalities, and projected dynamic systems. They then delve more deeply into resource allocation in cognitive radio networks. The text investigates the dynamics of cognitive radio networks from the perspectives of information theory, optimization, and control theory. It also provides a vision for the new world of wireless communications by integration of cellular and cognitive radio networks. This groundbreaking book: Shows how wireless communication systems increasingly use cognition to enhance their networks Explores how cognitive radio networks can be viewed as spectrum supply chain networks Derives analytic models for two complementary regimes for spectrum sharing (open-access and market-driven) to study both equilibrium and disequilibrium behaviors of networks Studies cognitive heterogeneous networks with emphasis on economic provisioning for resource sharing Introduces a framework that addresses the issue of spectrum sharing across licensed and unlicensed bands aimed for Pareto optimality Written for students of cognition, communication engineers, telecommunications professionals, and others, Fundamentals of Cognitive Radio offers a new generation of ideas and provides a fresh way of thinking about cognitive techniques in order to improve radio networks.