Optimal Chunk Based Resource Allocation For Ofdma Systems With Mulitple Ber Requirements
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Optimal Chunk Based Resource Allocation For Ofdma Systems With Mulitple Ber Requirements
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Author : Tianzhou He
language : en
Publisher:
Release Date : 2014
Optimal Chunk Based Resource Allocation For Ofdma Systems With Mulitple Ber Requirements written by Tianzhou He and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Adaptive signal processing categories.
In wireless orthogonal frequency division multiple-access (OFDMA) standards, subcarriers are grouped into chunks and a chunk of subcarriers is made as the minimum allocation unit for subcarrier allocation. We investigate the chunk-based resource allocation for OFDMA downlink, where data streams contain packets with diverse bit-errorrate (BER) requirements. Supposing that adaptive transmissions are based on a number of discrete modulation and coding modes, we derive the optimal resource allocation scheme that maximizes the weighted sum of average user rates under the multiple BER and total power constraints. With proper formulation, the relevant optimization problem is cast as an integer linear program (ILP). We can rigorously prove that the zero duality gap holds for the formulated ILP and its dual problem. Furthermore, it is shown that the optimal strategy for this problem can be obtained through Lagrange dual-based gradient iterations with fast convergence and low computational complexity per iteration. Relying on the stochastic optimization tools, we further develop a novel on-line algorithm capable of dynamically learning the underlying channel distribution and asymptotically approaching the optimal strategy without knowledge of intended wireless channels a priori. In addition, we extend the proposed approach to maximizing the a-fair utility functions of average user rates, and show that such a utility maximization can nicely balance the trade-off between the total throughput and fairness among users. Likewise, the optimal solution for the primal problem can be yielded through solving its dual problem. Numerical results are provided to gauge the performance of the proposed schemes and attain our benchmarks, followed by conclusions and later on the discussion of future directions in this field.
Optimal Chunk Based Network Scheduling
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Author : He Tianzhou
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2015-05-21
Optimal Chunk Based Network Scheduling written by He Tianzhou and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-21 with categories.
Efficient resource allocation for diverse data streams has attracted interest in future network design. We investigate the chunk-based resource allocation for OFDMA downlink, where data streams contain packets with diverse bit-error-rate (BER) requirements. Supposing that adaptive transmissions are based on a number of discrete modulation and coding modes, we derive the optimal resource allocation scheme that maximizes the weighted sum of average user rates under the multiple BER and total power constraints. With proper formulation, the relevant optimization problem is cast as an integer linear program. It is shown that the optimal strategy for this problem can be obtained through Lagrange dual-based gradient iterations with fast convergence and low computational complexity per iteration. A novel on-line algorithm is developed to approach the optimal strategy without knowledge of intended wireless channels a priori. Furthermore, the proposed approach is generalized to utility maximization of average user rates to balance the trade-off between the total throughput and fairness among users. Numerical results are provided to gauge the performance of the proposed schemes.
Mmwave Massive Mimo
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Author : Shahid Mumtaz
language : en
Publisher: Academic Press
Release Date : 2016-12-02
Mmwave Massive Mimo written by Shahid Mumtaz and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-02 with Technology & Engineering categories.
mmWave Massive MIMO: A Paradigm for 5G is the first book of its kind to hinge together related discussions on mmWave and Massive MIMO under the umbrella of 5G networks. New networking scenarios are identified, along with fundamental design requirements for mmWave Massive MIMO networks from an architectural and practical perspective. Working towards final deployment, this book updates the research community on the current mmWave Massive MIMO roadmap, taking into account the future emerging technologies emanating from 3GPP/IEEE. The book's editors draw on their vast experience in international research on the forefront of the mmWave Massive MIMO research arena and standardization. This book aims to talk openly about the topic, and will serve as a useful reference not only for postgraduates students to learn more on this evolving field, but also as inspiration for mobile communication researchers who want to make further innovative strides in the field to mark their legacy in the 5G arena. - Contains tutorials on the basics of mmWave and Massive MIMO - Identifies new 5G networking scenarios, along with design requirements from an architectural and practical perspective - Details the latest updates on the evolution of the mmWave Massive MIMO roadmap, considering future emerging technologies emanating from 3GPP/IEEE - Includes contributions from leading experts in the field in modeling and prototype design for mmWave Massive MIMO design - Presents an ideal reference that not only helps postgraduate students learn more in this evolving field, but also inspires mobile communication researchers towards further innovation
Genetic And Evolutionary Computing
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Author : Jerry Chun-Wei Lin
language : en
Publisher: Springer
Release Date : 2017-10-16
Genetic And Evolutionary Computing written by Jerry Chun-Wei Lin and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-16 with Technology & Engineering categories.
This volume of Advances in Intelligent Systems and Computing highlights papers presented at the 11th International Conference on Genetic and Evolutionary Computing (ICGEC 2017). Held from 6 to 8 November 2017 in Kaohsiung, Taiwan, the conference was co-sponsored by Springer, Fujian University of Technology in China, National University of Kaohsiung, Harbin Institute of Technology, National Kaohsiung University of Applied Sciences, and VŠB -Technical University of Ostrava. The conference was intended as an international forum for researchers and professionals engaged in all areas of genetic computing, intelligent computing, evolutionary and grid computing.
Orthogonal Frequency Division Multiplexing With Diversity For Future Wireless Systems
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Author : Khoa N. Le
language : en
Publisher: Bentham Science Publishers
Release Date : 2012
Orthogonal Frequency Division Multiplexing With Diversity For Future Wireless Systems written by Khoa N. Le and has been published by Bentham Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Computers categories.
"The book examines several aspects of Orthogonal Frequency Division Multiplexing (OFDM) employing linear diversity techniques such as inter-carrier interference, bit error rate, peak to average power and inter-block interference. It should be a useful refe"
Resource Allocation In Multiuser Multicarrier Wireless Systems
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Author : Ian C. Wong
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-11-15
Resource Allocation In Multiuser Multicarrier Wireless Systems written by Ian C. Wong and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-15 with Technology & Engineering categories.
This book proposes a unified algorithmic framework based on dual optimization techniques that have complexities that are linear in the number of subcarriers and users, and that achieve negligible optimality gaps in standards-based numerical simulations. Adaptive algorithms based on stochastic approximation techniques are also proposed, which are shown to achieve similar performance with even much lower complexity. All the algorithms proposed are clearly presented in concise block diagrams allowing the reader to implement these algorithms in the software of their choice. This book is an accessible reference for researchers and industry practitioners alike.
Smart Spaces And Next Generation Wired Wireless Networking
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Author : Sergey Balandin
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-08-05
Smart Spaces And Next Generation Wired Wireless Networking written by Sergey Balandin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-08-05 with Business & Economics categories.
The LNCS series reports state-of-the-art results in computer science research, development, and education, at a high level and in both printed and electronic form. Enjoying tight cooperation with the R & D community, with numerous individuals, as well as with prestigious organizations and societies, LNCS has grown into the most comprehensive computer science research forum available. The scope of LNCS, including its subseries LNAI and LNBI, spans the whole range of computer science and information technology including interdisciplinary topics in a variety of application fields. The type of material published traditionally includes proceedings (published in time for the respective conference) post-proceedings (consisting of thoroughly revised final full papers) research monographs (which may be based on outstanding PhD work, research projects, technical reports, etc.) More recently, several color-cover sublines have been added featuring, beyond a collection of papers, various added - value components; these sublines include tutorials (textbook - like monographs or collections of lectures given at advanced courses) state - of - the art surveys (offering complete and mediate coverage of a topic) hot topics (introducing emergent topics to the broader community) In parallel to the printed book, each new volume is published electronically in LNCS Online Book jacket.
User Centric Networking
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Author : Alessandro Aldini
language : en
Publisher: Springer
Release Date : 2014-05-07
User Centric Networking written by Alessandro Aldini and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-07 with Computers categories.
This work represents a milestone for the "ULOOP User-centric Wireless Local Loop" project funded by the EU IST Seventh Framework Programme. ULOOP is focused on the robust, secure, and autonomic deployment of user-centric wireless networks. Contributions by ULOOP partners as well as invited tutorials by international experts in the field. The expected impact is to increase awareness to user-centric networking in terms, e.g., of business opportunities and quality of experience, and to present adequate technology to sustain the growth of user-friendly wireless architectures. Throughout the last 3 years, ULOOP has developed enabling technologies for user-centricity in wireless networks, with particular emphasis on social trust management, cooperation incentives, community building, mobility estimation, and resource management. This work will be of interest to researchers, policymakers, operators, vendors, and end-users interested in the current and future directions of user-centric access networks.
Fundamental And Supportive Technologies For 5g Mobile Networks
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Author : El-Kader, Sherine Mohamed Abd
language : en
Publisher: IGI Global
Release Date : 2019-11-29
Fundamental And Supportive Technologies For 5g Mobile Networks written by El-Kader, Sherine Mohamed Abd and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-29 with Technology & Engineering categories.
Mobile wireless communication systems have affected every aspect of life. By providing seamless connectivity, these systems enable almost all the smart devices in the world to communicate with high speed throughput and extremely low latency. The next generation of cellular mobile communications, 5G, aims to support the tremendous growth of interconnected things/devices (i.e., internet of things [IoT]) using the current technologies and extending them to be used in higher frequencies to cope with the huge number of different devices. In addition, 5G will provide massive capacity, high throughput, lower end-to-end delay, green communication, cost reduction, and extended coverage area. Fundamental and Supportive Technologies for 5G Mobile Networks provides detailed research on technologies used in 5G, their benefits, practical designs, and recent challenges and focuses on future applications that could exploit 5G network benefits. The content within this publication examines cellular communication, data transmission, and high-speed communication. It is designed for network analysts, IT specialists, industry professionals, software engineers, researchers, academicians, students, and scientists.
Proceedings Of The International Conference On Soft Computing Systems
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Author : L. Padma Suresh
language : en
Publisher: Springer
Release Date : 2015-12-28
Proceedings Of The International Conference On Soft Computing Systems written by L. Padma Suresh and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-28 with Technology & Engineering categories.
The book is a collection of high-quality peer-reviewed research papers presented in International Conference on Soft Computing Systems (ICSCS 2015) held at Noorul Islam Centre for Higher Education, Chennai, India. These research papers provide the latest developments in the emerging areas of Soft Computing in Engineering and Technology. The book is organized in two volumes and discusses a wide variety of industrial, engineering and scientific applications of the emerging techniques. It presents invited papers from the inventors/originators of new applications and advanced technologies.