Dynamic Spectrum Access And Management In Cognitive Radio Networks

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Dynamic Spectrum Access and Management in Cognitive Radio Networks

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Author by : Ekram Hossain
Languange Used : English, France, Spanish, Italia and chinese
Page : 487
Isbn : 0521898471
Identifier : 9780521898478
Release : 2009-06-18
Publisher by : Cambridge University Press
Category : Computers
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Description : Read Now Dynamic Spectrum Access And Management In Cognitive Radio Networks by Ekram Hossain and you can download with pub, pdf, txt, doc, and more file format with free account. an all-inclusive introduction to this revolutionary technology, presenting the key research issues and state-of-the-art design, analysis, and optimization techniques.

Cognitive Radio and Dynamic Spectrum Access

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Author by : Lars Berlemann
Languange Used : English, France, Spanish, Italia and chinese
Page : 242
Isbn : 9780470754436
Identifier : 0470754435
Release : 2009-07-10
Publisher by : John Wiley & Sons
Category : Technology & Engineering
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Description : Read Now Cognitive Radio And Dynamic Spectrum Access by Lars Berlemann and you can download with pub, pdf, txt, doc, and more file format with free account. cognitive radio for dynamic spectrum access gives a comprehensive overview of the main concepts behind radio spectrum regulation, dynamic spectrum access and cognitive radio. spectrum measurements are introduced to illustrate the inefficiencies in today’s spectrum usage and the book also discusses enablers for horizontal and vertical spectrum sharing. among others a game-theory-based approach for spectrum sharing is described and evaluated. institution and standardisation approaches in academic research and industry are highlighted including ieee scc41, 802.11k/n/s/y and 802.22 which lead towards commercial exploitation of cognitive radio. in conclusion, this book looks at the initial steps towards the vision of true cognitive radio and the potential impact on telecommunication business. introduces the benefits and challenges of cognitive radio presents cognitive radio in research and industry and covers implications for operators from the perspective of a telecom operator examines how cognitive radio techniques will considerably change the wireless communication market.

Dynamic Spectrum Access and Management in Cognitive Radio Networks

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Author by : Ekram Hossain
Languange Used : English, France, Spanish, Italia and chinese
Page : 505
Isbn : 9780511651304
Identifier : 0511651309
Release : 2014-05-14
Publisher by : no defined
Category : Technology & Engineering
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Description : Read Now Dynamic Spectrum Access And Management In Cognitive Radio Networks by Ekram Hossain and you can download with pub, pdf, txt, doc, and more file format with free account. an all-inclusive introduction to this revolutionary technology, presenting the key research issues and state-of-the-art design, analysis, and optimization techniques.

Spectrum Access and Management for Cognitive Radio Networks

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Author by : Mohammad A Matin
Languange Used : English, France, Spanish, Italia and chinese
Page : 286
Isbn : 9811022542
Identifier : 9789811022548
Release : 2016-09-16
Publisher by : Springer
Category : Technology & Engineering
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Description : Read Now Spectrum Access And Management For Cognitive Radio Networks by Mohammad A Matin and you can download with pub, pdf, txt, doc, and more file format with free account. this book presents cutting-edge research contributions that address various aspects of network design, optimization, implementation, and application of cognitive radio technologies. it demonstrates how to make better utilization of the available spectrum, cognitive radios and spectrum access to achieve effective spectrum sharing between licensed and unlicensed users. the book provides academics and researchers essential information on current developments and future trends in cognitive radios for possible integration with the upcoming 5g networks. in addition, it includes a brief introduction to cognitive radio networks for newcomers to the field.

Dynamic Spectrum Management

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Author by : Ying-Chang Liang
Languange Used : English, France, Spanish, Italia and chinese
Page : 166
Isbn : 9811507767
Identifier : 9789811507762
Release : 2020
Publisher by : Springer Nature
Category : Cognitive radio networks
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Dynamic Spectrum Access for Wireless Networks

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Author by : Danda B. Rawat
Languange Used : English, France, Spanish, Italia and chinese
Page : 69
Isbn : 3319152998
Identifier : 9783319152998
Release : 2015-03-09
Publisher by : Springer
Category : Computers
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Description : Read Now Dynamic Spectrum Access For Wireless Networks by Danda B. Rawat and you can download with pub, pdf, txt, doc, and more file format with free account. this springerbrief presents adaptive resource allocation schemes for secondary users for dynamic spectrum access (dsa) in cognitive radio networks (crns) by considering quality-of-service requirements, admission control, power/rate control, interference constraints, and the impact of spectrum sensing or primary user interruptions. it presents the challenges, motivations, and applications of the different schemes. the authors discuss cloud-assisted geolocation-aware adaptive resource allocation in crns by outsourcing computationally intensive processing to the cloud. game theoretic approaches are presented to solve resource allocation problems in crns. numerical results are presented to evaluate the performance of the proposed methods. adaptive resource allocation in cognitive radio networks is designed for professionals and researchers working in the area of wireless networks. advanced-level students in electrical engineering and computer science, especially those focused on wireless networks, will find this information helpful.

Radio Resource Allocation and Dynamic Spectrum Access

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Author by : Badr Benmammar
Languange Used : English, France, Spanish, Italia and chinese
Page : 96
Isbn : 1118574354
Identifier : 9781118574355
Release : 2013-02-05
Publisher by : John Wiley & Sons
Category : Technology & Engineering
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Description : Read Now Radio Resource Allocation And Dynamic Spectrum Access by Badr Benmammar and you can download with pub, pdf, txt, doc, and more file format with free account. we are currently witnessing an increase in telecommunicationsnorms and standards given the recent advances in this field. theincreasing number of normalized standards paves the way for anincrease in the range of services available for each consumer.moreover, the majority of available radio frequencies have alreadybeen allocated. this explains the emergence of cognitive radio (cr)– the sharing of the spectrum between a primary user and asecondary user. in this book, we will present the state of the artof the different techniques for spectrum access using cooperationand competition to solve the problem of spectrum allocation andensure better management of radio resources in a radio cognitivecontext. the different aspects of research explored up until now onthe applications of multi-agent systems (mas) in the field ofcognitive radio are analyzed in this book. the first chapter beginswith an insight into wireless networks and mobiles, with specialfocus on the ieee 802.22 norm, which is a norm dedicated to cr.chapter 2 goes into detail about cr, which is a technical field atthe boundary between telecommunications and artificial intelligence(ai). in chapter 3, the concept of the “agent” from aiis expanded to mas and associated applications. finally, chapter 4establishes an overview of the use of ai techniques, in particularmas, for its allocation of radio resources and dynamic access tothe spectrum in cr. contents 1. wireless and mobile networks. 2. cognitive radio. 3. multi-agent systems. 4. dynamic spectrum access. about the authors badr benmammar has been associate professor at uabt (universityabou bekr belkaïd tlemcen), algeria since 2010 and was aresearch fellow at cnrs labri laboratory of the university ofbordeaux 1 until 2007. he is currently carrying out research at thelaboratory of telecommunications of tlemcen (ltt), uabt, algeria.his main research activities concern the cognitive radio network,quality of service on mobile and wireless networks, end-to-endsignaling protocols and agent technology. his work on quality ofservice has led to many publications in journals and conferenceproceedings. asma amraoui is currently a phd candidate; she is preparing adoctoral thesis on a topic of research that explores the use ofartificial intelligence techniques in cognitive radio networks. sheis attached to the laboratory of telecommunications of tlemcen(ltt) in algeria.

Cognitive Radio Networks From Theory to Practice

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Author by : Ahmed Khattab
Languange Used : English, France, Spanish, Italia and chinese
Page : 110
Isbn : 1461440335
Identifier : 9781461440338
Release : 2012-08-27
Publisher by : Springer Science & Business Media
Category : Technology & Engineering
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Description : Read Now Cognitive Radio Networks by Ahmed Khattab and you can download with pub, pdf, txt, doc, and more file format with free account. this book describes a communication paradigm that could shape the future of wireless communication networks, opportunistic spectrum access (osa) in cognitive radio networks (crn). while several theoretical osa approaches have been proposed, they are challenged by the practical limitations of cognitive radios: the key enabling technology of osa. this book presents an unprecedented formulation of the osa problem in cnr that takes into account the practical limitations encountered due to existing technologies. based on such a problem formulation, this book presents a framework and protocol details implementing the analytically-optimized solution of this problem. unlike the state-of-the-art of crn implementations that typically target software define radios which are not suitable for real systems, this book describes the implementation of distributed osa, using practical radio transceiver technologies. it provides a thorough characterization of the gains available to theoretical osa approaches if the practical limitations are taken into consideration. tackles the cognitive radio networks performance optimization problem, taking into account the practical limitations of today’s technologies; provides thorough performance evaluation in arbitrary, large-scale networks, as well as microscopic, small-scale performance evaluation, using realistic hardware implementation; presents an empirical study of the gains available over existing techniques by adopting practical approaches; tackles the cognitive radio networks performance optimization problem, taking into account the practical limitations of today’s technologies; provides thorough performance evaluation in arbitrary, large-scale networks, as well as microscopic, small-scale performance evaluation, using realistic hardware implementation; presents an empirical study of the gains available over existing techniques by adopting practical approaches;

Contribution to Spectrum Management in Cognitive Radio Networks: a Cognitive Management Framework

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Author by : Faouzi Bouali
Languange Used : English, France, Spanish, Italia and chinese
Page : 183
Isbn :
Identifier : OCLC:1120420293
Release : 2014
Publisher by : no defined
Category :
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Description : Read Now Contribution To Spectrum Management In Cognitive Radio Networks A Cognitive Management Framework by Faouzi Bouali and you can download with pub, pdf, txt, doc, and more file format with free account. to overcome the current under-utilization of spectrum resources, the cr (cognitive radio) paradigm has gained an increasing interest to perform the so-called dynamic spectrum access (dsa). in this respect, cognitive radio networks (crns) have been strengthened with cognitive management support to push forward their deployment and commercialization. this dissertation has assessed the relevance of exploiting several cognitive management functionalities in various scenarios and case studies. specifically, this dissertation has constructed a generic cognitive management framework, based on the fittingness factor concept, to support spectrum management in crns. under this framework, the dissertation has addressed two of the most promising cr applications, namely an opportunistic spectrum access (osa) to licensed bands and open sharing of license-exempt bands. in the former application, several strategies that exploit temporal statistical dependence between primary activity/inactivity durations to perform a proactive spectrum selection have been discussed. a set of guidelines to select the most relevant strategy for a given environment have been provided. in the latter application, a fittingness factor-based spectrum selection strategy has been proposed to efficiency exploit the different bands. several formulations of the fittingness factor have been compared, and their relevance have been assessed under different settings. drawing inspiration from these applications, a more general proactive strategy exploiting a characterization of spectrum resources at both the time and frequency domains has been developed to jointly assist spectrum selection (ss) and spectrum mobility (sm) functionalities. several variants of the proposed strategy, each combining different choices and options of implementation, have been compared to identify which of its components have the most significant impact on performance depending on the working conditions of the crn. to assess rationality of the proposed strategy with respect to other strategies, a cost-benefit analysis has been conducted to confront the introduced gain in terms of user satisfaction level to the incurred cost in terms of signaling amount. finally, the dissertation has conducted an analysis of practicality aspects in terms of robustness to environment uncertainty and applicability to realistic environments. with respect to the former aspect, robustness has been assessed in front of two sources of uncertainty, namely imperfection of the acquisition process and non-stationarity of the environment, and additional functionalities have been developed, when needed, to improve robustness. with respect to the latter, the proposed framework has been applied to a digital home (dh) environment to validate the obtained key findings under realistic conditions.

Cognitive Networks Applications and Deployments

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Author by : Jaime Lloret Mauri
Languange Used : English, France, Spanish, Italia and chinese
Page : 516
Isbn : 1482236990
Identifier : 9781482236996
Release : 2014-12-09
Publisher by : CRC Press
Category : Technology & Engineering
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Description : Read Now Cognitive Networks by Jaime Lloret Mauri and you can download with pub, pdf, txt, doc, and more file format with free account. a cognitive network makes use of the information gathered from the network in order to sense the environment, plan actions according to the input, and make appropriate decisions using a reasoning engine. the ability of cognitive networks to learn from the past and use that knowledge to improve future decisions makes them a key area of interest for anyone whose work involves wireless networks and communications. cognitive networks: applications and deployments examines recent developments in cognitive networks from the perspective of cutting-edge applications and deployments. presenting the contributions of internationally renowned experts, it supplies complete and balanced treatment of the fundamentals of both cognitive radio communications and cognitive networks—together with implementation details. the book includes case studies and detailed descriptions of cognitive radio platforms and testbeds that demonstrate how to build real-world cognitive radio systems and network architectures. it begins with an introduction to efficient spectrum management and presents a survey on joint routing and dynamic spectrum access in cognitive radio networks. next, it examines radio spectrum sensing and network coding and design. it explores intelligent routing in graded cognitive networks and presents an energy-efficient routing protocol for cognitive radio ad hoc networks. the book concludes by considering dynamic radio spectrum access and examining vehicular cognitive networks and applications. presenting the latest standards and spectrum policy developments, the book’s strong practical orientation provides you with the understanding you will need to participate in the development of compliant cognitive systems.

Spectrum Sharing in Cognitive Radio Networks Medium Access Control Protocol Based Approach

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Author by : Shweta Pandit
Languange Used : English, France, Spanish, Italia and chinese
Page : 254
Isbn : 3319531476
Identifier : 9783319531472
Release : 2017-04-28
Publisher by : Springer
Category : Technology & Engineering
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Description : Read Now Spectrum Sharing In Cognitive Radio Networks by Shweta Pandit and you can download with pub, pdf, txt, doc, and more file format with free account. 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.

Dynamic Spectrum Scheduling and Management in Centralized Cognitive Radio Networks

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Author by : Omar Khalid Sweileh
Languange Used : English, France, Spanish, Italia and chinese
Page : 79
Isbn :
Identifier : OCLC:1122929976
Release : 2017
Publisher by : no defined
Category : Cognitive radio networks
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Description : Read Now Dynamic Spectrum Scheduling And Management In Centralized Cognitive Radio Networks by Omar Khalid Sweileh and you can download with pub, pdf, txt, doc, and more file format with free account. "as the demand for wireless radio spectrum increases, spectrum regulatory authorities expect to face a spectrum scarcity problem. dynamic spectrum access (dsa) was recently proposed to enable efficient utilization of the radio spectrum. cognitive radio (cr)s are used to help in the realization of efficient dsa techniques. an integral component in cognitive radio network (crn), and in dsa in general, is scheduling, which has to do with the secondary user (su)'s ability to decide on the available spectrum that best meets its quality of service (qos) requirements. switching delay, which is defined as the time needed by a su to hop among available channels, is a major factor that affects the performance of crns. this study is motivated by the fact that the literature is in need for efficient schedulers that can maximize the crn's throughput while maintaining a minimum spectrum switching delay for the sus. specifically, two scheduling techniques are introduced with the aim of minimizing the switching delay and hence maximizing the amount of transmitted information over the underlying crn. the first scheduler is an opportunistic spectrum and switching-delay aware scheduler with the objective of maximizing the total number of transmitted packets over the span of multiple time-slots. from the simulation results, the opportunistic scheduler, in highly dynamic channels, was able to transmit up to 20% more packets compared to the benchmark scheduling algorithm where the scheduling problem is done every time-slot. moreover, the scheduler was able to reduce the effect of both switching and scheduling delays. on the other hand, the second proposed scheduler maximizes spectrum exploitation by allowing unscheduled sus to utilize any idle spectrum during the switching delay. from the results, the proposed scheduler allowed for ≈38% more sus to be scheduled in an overpopulated crn. moreover, by utilizing the switching delay, the proposed scheduler was able to deliver around 4.5% more packets compared to the benchmark algorithm without sacrificing any complexity. in conclusion, both of the implemented schedulers delivered a higher amount of transmitted packets compared to the benchmark scheduling algorithms and both schedulers were able to reduce the effect of switching delay."--abstract.