Download or read book Spectrum Management Methods with QoS Provisioning for Wideband Cognitive Radio Networks written by 陳翰緯 and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QoS and Energy Management in Cognitive Radio Network written by Vishram Mishra and published by Springer. This book was released on 2016-10-25 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the important aspects involved in making cognitive radio devices portable, mobile and green, while also extending their service life. At the same time, it presents a variety of established theories and practices concerning cognitive radio from academia and industry. Cognitive radio can be utilized as a backbone communication medium for wireless devices. To effectively achieve its commercial application, various aspects of quality of service and energy management need to be addressed. The topics covered in the book include energy management and quality of service provisioning at Layer 2 of the protocol stack from the perspectives of medium access control, spectrum selection, and self-coexistence for cognitive radio networks.
Download or read book Provisioning Quality of services in Cognitive Radio Networks written by Md Rashidul Hasan and published by . This book was released on 2012 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: To meet the growing demand for bandwidth and to improve the utilisation of frequency spectrum, cognitive radio (CR) evolves as the key enabling technology, which allows CR users (or unlicensed users) to access licensed spectrum opportunistically. Accessing the spectrum in an opportunistic way introduces many research challenges, including exploiting the behaviour of spectrum holes, sharing spectrum holes by multiple access techniques, minimising interference and enforcing a semi-formal agreement between CR users and licensed users. Additionally, supporting delay-sensitive real-time services through CR networks, so that unlicensed users are allowed to experience full-scale networking services by opportunistically sharing spectrum from a number of existing networks without impacting on the licensed users, remains a challenging task. To address these challenges, CR users require an efficient and effective medium access control (MAC) framework, which will not only ensure quality-of-services (QoS) in the presence of resource uncertainty but also guarantee an agreed level of interference with licensed signals. This thesis aims at provisioning QoS in CR networks by proposing a new MAC framework that introduces a novel interference minimisation technique by exploiting the usage characteristics of licensed signals. To accommodate the surging demand for bandwidth, we have investigated whether the general purpose CR ad hoc networks are capable of fulfilling QoS through opportunistic spectrum sharing. By empowering CR users with multiple channel aggregation techniques, we have drawn a useful limit between the hardware capability and the channel availability for certain QoS requirements. To meet the requirements of an agreed interference level, we have proposed an optimal transmission holding time by CR users for each licensed channel by capturing the dynamic behaviour of licensed users. The proposed MAC accommodates multiple CR users in a multichannel scenario and ensures fair load balancing across the channels. The applicability of the proposed MAC is ascertained by thorough analysis of the network related QoS parameters, i.e., throughput and delay. Our proposed MAC framework eventually ensures non-intrusive co-existence of CR and licensed users, which is the pre-condition for wide acceptability of CR technology.
Download or read book Spectrum Sharing in Cognitive Radio Networks written by Shweta Pandit and published by Springer. This book was released on 2017-04-12 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Spectrum Sharing in Cognitive Radio Networks written by Ghanshyam Singh and published by John Wiley & Sons. This book was released on 2021-05-27 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Dynamic Spectrum Access and Management in Cognitive Radio Networks written by Ekram Hossain and published by Cambridge University Press. This book was released on 2009-06-18 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: An all-inclusive introduction to this revolutionary technology, presenting the key research issues and state-of-the-art design, analysis, and optimization techniques.
Download or read book Dynamic Spectrum Access for Wireless Networks written by Danda B. Rawat and published by Springer. This book was released on 2015-03-09 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Self Organization and Green Applications in Cognitive Radio Networks written by Al-Dulaimi, Anwer and published by IGI Global. This book was released on 2013-01-31 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Organization and Green Applications in Cognitive Radio Networks provides recent research on the developments of efficient cognitive network topology. The most current procedures and results are presented to demonstrate how developments in this area can reduce complications, confusion, and even costs. The book also identifies future challenges that are predicted to arrive in the Cognitive Radio Network along with potential solutions. This innovative publication is unique because it suggests green, energy efficient and cost efficient resolutions to the inevitable challenges in the network.
Download or read book QoS Based Route Management in Cognitive Radio Networks written by Saed Saleh Alrabaee and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectrum Sharing in Cognitive Radio Networks written by Ghanshyam Singh and published by Wiley. This book was released on 2021-05-27 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Design and Simulation of Spectrum Management Methods for Wireless Local Area Networks written by Darrell Sparks and published by Createspace Independent Publishing Platform. This book was released on 2018-05-17 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Darrell Sparks describes two major areas of spectrum management: the coordination of neighbouring networks with overlapping ranges by controlling different transmission parameters and the channel allocation by the base station inside a radio cell using a cross-layer approach. Theoretical analyses and simulations demonstrate the usage of these methods and show the QoS enhancements which can be achieved.
Download or read book Cognitive Radio Networks Optimization with Spectrum Sensing Algorithms written by Tanuja S. Dhope and published by CRC Press. This book was released on 2022-09-01 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, a considerable amount of effort has been devoted, both in industry and academia, towards the efficient utilization of the available spectrum under the various propagation models which lead towards the design and dimensioning of the future network Internet of Things (IoT).This book focuses on Television White Space (TVWS) opportunities and regulatory aspects for cognitive radio applications, and includes case studies for the exploitation of TVWS depending on user's mobility, and the geo-location between user and the Base Station. The book presents recent advances in spectrum sensing, reflecting state of the art technology and research achievements in this area as well as a new insights in spectrum sensing of performance modeling, analysis and worldwide applications. Technical topics discussed include: • Novel Application of TV White Space• Spectrum Sensing in Cognitive Radio• Cooperative Spectrum Sensing• DoA Estimation Algorithms
Download or read book Mobility and Spectrum Management for Cognitive Radio Networks written by Shashank Kottawar and published by . This book was released on 2016 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A Cognitive Radio (CR) network is a wireless network in which smart devices can automatically detect available channels in the wireless spectrum called "White Spaces" and adapt transmission parameters optimizing the overall radio spectrum use. The efficiency of CR systems depends upon two major factors including quality of service and mobility management. In this project, a mobility scheme using the cooperative theory is presented to allow CR users to switch towards the best available spectrum band while changing the network. The proposed method establishes trading mechanisms between primary and CR users, which enables the latter to select the best band with a low price and large use duration. Simulation results prove that the proposed method conserves the frequency and the bandwidth required for various applications and ensures users' continuity of service while moving from one network to another, which results in high utility for both primary and CR networks.
Download or read book Multimedia over Cognitive Radio Networks written by Fei Hu and published by CRC Press. This book was released on 2014-12-04 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: With nearly 7 billion mobile phone subscriptions worldwide, mobility and computing have become pervasive in our society and business. Moreover, new mobile multimedia communication services are challenging telecommunication operators. To support the significant increase in multimedia traffic—especially video—over wireless networks, new technological infrastructure must be created. Cognitive Radio Networks (CRNs) are widely regarded as one of the most promising technologies for future wireless communications. This book explains how to efficiently deliver video, audio, and other data over CRNs. Covering advanced algorithms, protocols, and hardware-/software-based experiments, this book describes how to encode video in a prioritized way to send to dynamic radio links. It discusses different FEC codes for video reliability and explains how different machine learning algorithms can be used for video quality control. It also explains how to use readily available software tools to build a CRN simulation model. This book explains both theoretical and experimental designs. It describes how universal software radio peripheral (USRP) boards can be used for real-time, high-resolution video transmission. It also discusses how a USRP board can sense the spectrum dynamics and how it can be controlled by GNU Radio software. A separate chapter discusses how the network simulator ns-2 can be used to build a simulated CRN platform.
Download or read book SPECTRUM MANAGEMENT IN COGNITIVE RADIO NETWORKS written by Vinod Hanmantrao Patil and published by . This book was released on 2023-05-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrum management in cognitive radio networks refers to the processes and techniques employed to efficiently and dynamically allocate and utilize the available radio frequency spectrum in a cognitive radio network (CRN). A cognitive radio network is an intelligent wireless communication system that can sense, adapt, and make decisions based on the surrounding radio environment. In traditional wireless communication systems, spectrum allocation is typically static and fixed, which can lead to inefficient utilization of the spectrum. Cognitive radio networks aim to overcome this limitation by enabling the dynamic and flexible access to the spectrum, allowing unlicensed users, or secondary users, to opportunistically access the idle or underutilized spectrum bands licensed to primary users. Here is a description of the key aspects of spectrum management in cognitive radio networks: 1. Spectrum Sensing: Cognitive radios have the ability to sense and monitor the spectrum to identify the available frequency bands and detect the presence of primary users. Spectrum sensing techniques such as energy detection, matched filtering, and cyclostationary feature detection are used to accurately detect primary user activity. 2. Spectrum Decision: Once the spectrum is sensed, cognitive radios make informed decisions on which frequency bands to use for transmission. This decision is based on various factors, including spectrum availability, quality of the detected signal, interference levels, and policies defined by regulatory bodies or network operators. 3. Spectrum Sharing: Cognitive radio networks employ spectrum sharing mechanisms to enable coexistence between primary and secondary users. Techniques such as dynamic spectrum access (DSA) and interference mitigation strategies are used to ensure that secondary users can access the spectrum without causing harmful interference to primary users. 4. Spectrum Mobility: Cognitive radios have the capability to dynamically switch between different frequency bands to ensure efficient spectrum utilization. This involves spectrum handoff, where a secondary user relinquishes the current spectrum band and switches to another band when the primary user becomes active or when the quality of the current channel degrades. Overall, spectrum management in cognitive radio networks is a complex and dynamic process that aims to exploit the underutilized spectrum resources while ensuring efficient coexistence with primary users and adherence to regulatory policies. By leveraging advanced sensing, decision-making, and sharing techniques, cognitive radio networks enable more flexible and effective use of the radio frequency spectrum, thereby addressing the spectrum scarcity challenge and enhancing the overall efficiency of wireless communications.
Download or read book Spectrum Access and Management for Cognitive Radio Networks written by Mohammad A Matin and published by Springer. This book was released on 2016-09-16 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Radio Spectrum Management written by Haim Mazar (Madjar) and published by John Wiley & Sons. This book was released on 2016-07-11 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the fundamentals of wireless communications and services, explaining in detail what RF spectrum management is, why it is important, which are the authorities regulating the use of spectrum, and how is it managed and enforced at the international, regional and national levels. The book offers insights to the engineering, regulatory, economic, legal, management policy-making aspects involved. Real-world case studies are presented to depict the various approaches in different countries, and valuable lessons are drawn. The topics are addressed by engineers, advocates and economists employed by national and international spectrum regulators. The book is a tool that will allow the international regional and national regulators to better manage the RF spectrum, and will help operators and suppliers of wireless communications to better understand their regulators.
