Modeling and Performance Analysis of Spectrum Sensing and Cooperative Relay Networks PDF Download

Author: Oluwatobi Opeyemi Olabiyi
Publisher:
ISBN:
Category : Cognitive radio networks
Languages : en
Pages : 172

View

Book Description

Author: Bappi Barua
Publisher:
ISBN:
Category : Wireless communication systems
Languages : en
Pages : 220

View

Book Description

Author: Xavier Fernando
Publisher: Springer
ISBN: 3319739573
Category : Technology & Engineering
Languages : en
Pages : 117

View

Book Description
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: Saman Atapattu
Publisher: Springer Science & Business Media
ISBN: 1493904949
Category : Computers
Languages : en
Pages : 94

View

Book Description
This Springer Brief focuses on the current state-of-the-art research on spectrum sensing by using energy detection, a low-complexity and low-cost technique. It includes a comprehensive summary of recent research, fundamental theories, possible architectures, useful performance measurements of energy detection and applications of energy detection. Concise, practical chapters explore conventional energy detectors, alternative forms of energy detectors, performance measurements, diversity techniques and cooperative networks. The careful analysis enables reader to identify the most efficient techniques for improving energy detection performance. Energy Detection for Spectrum Sensing in Cognitive Radio is a valuable tool for researchers and practitioners interested in spectrum sensing and cognitive radio networks. Advanced-level students studying wireless communication will also benefit from this brief.

Author: Kamal M. Captain
Publisher: CRC Press
ISBN: 1000472035
Category : Technology & Engineering
Languages : en
Pages : 256

View

Book Description
This comprehensive reference text discusses concepts of cognitive radio and the advances in the field of spectrum sensing. This text discusses the concept of cognitive radio for next generation wireless communication and a very critical aspect of cognitive radio – that is, spectrum sensing – in detail. It covers important topics including narrowband spectrum sensing, wideband spectrum sensing, cooperative spectrum sensing, system and channel models, detection algorithms, approximation of decision statistics, and theoretical analysis of detection algorithms in detail. Separate chapters are dedicated to discussing the analysis and use of detection algorithms for narrowband spectrum sensing, wideband spectrum sensing, and cooperative wideband spectrum sensing. Aimed at graduate students and academic researchers in the fields of electrical engineering and electronics and communication engineering, this text: Discusses concepts of cognitive radio and research in spectrum sensing. Presents mathematical analysis of algorithms considering practical environment. Explains novel wideband spectrum sensing algorithms with detailed analysis. Provides mathematical derivations to help readers. Discusses basic spectrum sensing algorithms, from narrowband spectrum sensing to the more advanced wideband spectrum sensing.

Author: Navod D. Suraweera
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 177

View

Book Description
The cancellation of co-channel interference (CCI) is extremely vital in the nextgeneration wireless systems, where universal frequency reuse is commonly used to maximize the capacity. The implementation of CCI cancellation at the receivers instead of the transmitters minimizes the additional overhead associated with CCI cancellation. Optimum combining (OC) enables the cancellation of CCI in multiple-antenna receivers. Cooperative relaying creates a virtual antenna array, which enables the cancellation of CCI using OC in single antenna receivers. The cancellation of CCI in cooperative relay networks using OC is the main focus of this thesis. More specifically, 1) the modeling and the application of optimum combining for cooperative relay networks 2) carrying out the performance analyses in different system and channel models to obtain performance metrics and 3) the evaluation of the robustness and the feasibility of practical implementation of OC in cooperative relaying, are carried out. The performance of OC in decode-and-forward and amplify-and-forward relay protocols, and in opportunistic relay selection is studied. The deterministic interference model, which can be used to model conventionally planned networks, and the random interference model, which can be applied for fourth-generation ad hoc and heterogeneous networks, are considered in the performance analysis. The impact of imperfect estimations of the desired and interferer channels on OC in cooperative relaying is analyzed. Optimum combining improves the performance of cooperative relay networks significantly with a minimum additional overhead, which allows the capacity to be maximized using universal frequency reuse at each transmitter.

Author: Yibo He
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author: Mubashir Husain Rehmani
Publisher: Springer
ISBN: 3319910027
Category : Technology & Engineering
Languages : en
Pages : 292

View

Book Description
This book provides an overview of the latest research and development of new technologies for cognitive radio, mobile communications, and wireless networks. The contributors discuss the research and requirement analysis and initial standardization work towards 5G cellular systems and the capacity problems it presents. They show how cognitive radio, with the capability to flexibly adapt its parameters, has been proposed as the enabling technology for unlicensed secondary users to dynamically access the licensed spectrum owned by legacy primary users on a negotiated or an opportunistic basis. They go on to show how cognitive radio is now perceived in a much broader paradigm that will contribute to solve the resource allocation problem that 5G requirements raise. The chapters represent hand-selected expanded papers from EAI sponsored and hosted conferences such as the 12th EAI International Conference on Mobile and Ubiquitous Systems, the 11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, the 10th International Conference on Cognitive Radio Oriented Wireless Networks, the 8th International Conference on Mobile Multimedia Communications, and the EAI International Conference on Software Defined Wireless Networks and Cognitive Technologies for IoT.

Author: C. Tellambura
Publisher: Wiley
ISBN: 9781118457016
Category : Technology & Engineering
Languages : en
Pages : 512

View

Book Description
A comprehensive technical coverage of both theoretical and practical aspect of two-way relay technology Describes the state of the art technical concepts of cooperative two-way relay technology from theory to practice, from the basics to more advanced theory. The introductory sections of the book are useful for readers wishing to grasp the basics of cooperative two-way relay technology. Alternatively, the more rigorous and in-depth theory and analysis is indispensable for higher level students wishing to further the advanced concepts, which would eventually be beneficial for the advancements of the technology itself. Two-way wireless relay communication technology is covered comprehensively giving special attention to channel/system models, transmission technologies and performance analysis. Specific topics covered include: Channel and system models for cooperative two-way relay communication; Parameter estimation techniques for two-way relaying; Multi-antenna transmission strategies for two-way relaying; Unified performance analysis frameworks for two-way relay networks; Next generation wireless communication system architectures for cooperative two-way relaying. For each of the aforementioned subtopics, system concepts, theoretical backgrounds, applications and illustrative simulation results are provided, offering a complete understanding of basic and advanced approaches to the topic. A comprehensive technical coverage of both theoretical and practical aspects of two-way relay technology Highly illustrated, demonstrating cooperative two-way relay channel/system parameters and specifications, channel/system models, related algorithms, and computer simulation results Presents case studies on the integration of cooperative two-way relay technology with both the existing and emerging (4G and subsequent wireless standards) network architectures Well-defined and selective examples provided in each main section offering intuitive and easier understanding of the corresponding technology Accompanying website to include tutorial slides An invaluable resource for Graduate students majoring in wireless communications; Research engineers working in communication system design; Technical and marketing managers of wireless product development and marketing; Strategists and planners of wireless communication system technology.

Author: Chilakala Sudhamani
Publisher:
ISBN: 9783346267023
Category :
Languages : en
Pages : 172

View

Book Description
Doctoral Thesis / Dissertation from the year 2020 in the subject Engineering - Communication Technology, grade: A, language: English, abstract: Cooperative spectrum sensing technique is used to maximize the utilization of unused licensed spectrum. As the cooperation among the secondary users increases the detection performance increases, which increases the average channel throughput and energy efficiency but it depends on the number of cooperative secondary users, fusion rules, channel conditions and detection threshold. In this thesis average channel throughput, energy consumption and energy efficiency are estimated for variable number of secondary users and detection thresholds using hard fusion rules i.e. AND, OR and MAJORITY fusion rules. From the results it has been observed that the performance of AND fusion rule is better at low detection thresholds and for less number of secondary users. The performance of OR fusion rule is better at high detection thresholds and for large number of secondary users. The performance of MAJORITY fusion rule follows the performance of AND fusion rule at low detection thresholds and it follows the performance of OR fusion rule at high detection thresholds. However as the number of cooperative secondary users increases the energy required for spectrum sensing and reporting sensing results to the fusion center increases, which increases the energy consumption and reduces the energy efficiency. Therefore energy efficiency can be improved by maximizing the average channel throughput or by minimizing the energy consumption. To minimize the energy consumption in cooperative spectrum sensing, optimization technique has been proposed in this thesis and it is used for further improvement of energy efficiency. With this optimization technique, optimal number of cooperative secondary users are derived by maximizing the energy efficiency using AND and OR fusion rules but not with MAJORITY fusion rule. Because it is very difficult to est