Download or read book Semi noisy Deterministic Multiple Access Channels written by Rudolf Ahlswede and published by . This book was released on 2000 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Theory of Information Transfer and Combinatorics written by Rudolf Ahlswede and published by Springer. This book was released on 2006-12-08 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects 63 revised, full-papers contributed to a research project on the "General Theory of Information Transfer and Combinatorics" that was hosted from 2001-2004 at the Center for Interdisciplinary Research (ZIF) of Bielefeld University and several incorporated meetings. Topics covered include probabilistic models, cryptology, pseudo random sequences, quantum models, pattern discovery, language evolution, and network coding.
Download or read book Deterministic Feedback Coding Schemes for the Additive White Gaussian Noise Broadcast and Multiple access Channels written by Lawrence Howard Ozarow and published by . This book was released on 1977 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deterministic Feedback Coding Schemes for the Additive White Gaussian Noise Broadcast and Multiple Access Channels written by Lawrence Howard Ozarow and published by . This book was released on 1977* with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Models of the additive white Gaussian noise (AWGN) broadcast channel with feedback are analyzed. A deterministic coding procedure is proposed which allows reliable transmission at all rate points inside the capacity regions of these models. A deterministic coding scheme for the AWGN multiple-access channel with feedback is also evaluated. This scheme achieves rate points beyond those found by Cover and Leung. (Author).
Download or read book Multiple Access Channels written by Ezio Biglieri and published by IOS Press. This book was released on 2007 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveys general results on multiple-access channels, and gives an overview of the problems of CDMA solutions. This work includes chapters devoted to the information-theoretical aspects of multiple-access communication. It discusses multiple-access techniques and covers coding techniques.
Download or read book A coding scheme for the additive white Gaussion noise multiple access channel with semi feedback written by Frans M. Willems and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deterministic Simulation of Randomized Protocols Over Noisy Channels written by S. Venkatesan and published by . This book was released on 1994 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Securing Wireless Communications at the Physical Layer written by Ruoheng Liu and published by Springer Science & Business Media. This book was released on 2009-12-01 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses specifically on physical layer security, a burgeoning topic in security. It consists of contributions from the leading research groups in this emerging area, and for the first time important high-impact results are collected together.
Download or read book Deterministic Simulation of Randomized Protocols Over Arbitrary Networks of Noisy Channels written by S. Venkatesan and published by . This book was released on 1996 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Network Information Theory written by Abbas El Gamal and published by Cambridge University Press. This book was released on 2011-12-08 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive treatment of network information theory and its applications provides the first unified coverage of both classical and recent results. With an approach that balances the introduction of new models and new coding techniques, readers are guided through Shannon's point-to-point information theory, single-hop networks, multihop networks, and extensions to distributed computing, secrecy, wireless communication, and networking. Elementary mathematical tools and techniques are used throughout, requiring only basic knowledge of probability, whilst unified proofs of coding theorems are based on a few simple lemmas, making the text accessible to newcomers. Key topics covered include successive cancellation and superposition coding, MIMO wireless communication, network coding, and cooperative relaying. Also covered are feedback and interactive communication, capacity approximations and scaling laws, and asynchronous and random access channels. This book is ideal for use in the classroom, for self-study, and as a reference for researchers and engineers in industry and academia.
Download or read book A Coding Scheme for the Additive White Gaussian Noise Multiple Access Channel with Semi feedback written by F. M. J. Willems and published by . This book was released on 1981 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Theory written by Imre Csiszár and published by Cambridge University Press. This book was released on 2011-06-30 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Csiszár and Körner's book is widely regarded as a classic in the field of information theory, providing deep insights and expert treatment of the key theoretical issues. It includes in-depth coverage of the mathematics of reliable information transmission, both in two-terminal and multi-terminal network scenarios. Updated and considerably expanded, this new edition presents unique discussions of information theoretic secrecy and of zero-error information theory, including the deep connections of the latter with extremal combinatorics. The presentations of all core subjects are self contained, even the advanced topics, which helps readers to understand the important connections between seemingly different problems. Finally, 320 end-of-chapter problems, together with helpful hints for solving them, allow readers to develop a full command of the mathematical techniques. It is an ideal resource for graduate students and researchers in electrical and electronic engineering, computer science and applied mathematics.
Download or read book TDD Massive MIMO Systems written by Elina Nayebi and published by . This book was released on 2018 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an ever-increasing demand for higher wireless throughput, there has been growing interest in massive multiple-input multiple-output (MIMO) as a key technology for future wireless networks. This dissertation addresses some of the key aspects of this technology that include: 1. precoding, power optimization, and access point (AP) location design in cell-free massive MIMO systems with distributed APs; 2. semi-blind channel estimation in massive MIMO systems. Cell-free massive MIMO is a special deployment of massive MIMO systems with a large number of distributed low-cost low-power single antenna APs serving a much smaller number of users. The cell-free system is not partitioned into cells and each user is served by all APs simultaneously. The downlink capacity lower bounds for conjugate beamforming and zero-forcing precoders in cell-free systems are derived in this dissertation. To further increase the achievable throughput, max-min power optimization algorithms are formulated, and low complexity max-min power allocation algorithms are developed. We also introduce a technique that employs L1-norm sparsity penalty in the max-min power optimization for conjugate beamforming that helps us decrease the number of APs that serve a user in a practical system. The uplink capacity lower bounds for minimum mean squared error (MMSE) and large scale fading decoding receivers in cell-free systems are provided. A deterministic approximation for signal-to-interference-plus-noise ratio of MMSE receiver is obtained with an unlimited number of APs and user devices. Next, AP location design problem is investigated to maximize the sum-throughput and the minimum-throughput in uplink transmission of cell-free systems with an arbitrary user distribution. Utilizing compressed sensing techniques, the AP placement problems are formulated as convex optimization problems. An AP location design algorithm is also presented in an alternative small-cell system in which each user is served by only one AP. Finally, semi-blind channel estimation for multiuser massive MIMO systems is investigated. Multiple semi-blind channel estimation techniques based on the expectation-maximization algorithm are developed by considering different priors on data symbols. Cramer Rao Bounds (CRBs) for semi-blind channel estimation are derived for deterministic and stochastic (Gaussian) data symbol models to give us an analytical understanding of the semi-blind scheme's performance. To get insight into the behavior of a massive MIMO system, the asymptotic behavior of the CRBs as the number of antennas at the base station grows is analyzed.
Download or read book Channel Capacity in the Presence of Feedback and Side Information written by Nevroz Şen and published by . This book was released on 2013 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with the Shannon-theoretic fundamental limits of channel coding for single-user channels with memory and feedback and for multi-user channels with side information. We first consider the feedback capacity of a class of symmetric channels with memory modelled as nite-state Markov channels. The symmetry yields the existence of a hidden Markov noise process that facilitates the channel description as a function of input and noise, where the function satisfies a desirable invertibility property. We show that feedback does not increase capacity for such class of finite-state channels and that both their non-feedback and feedback capacities are achieved by an independent and uniformly distributed input. As a result, the capacity is given as a difference of output and noise entropy rates, where the output is also a hidden Markov process; hence, capacity can be approximated via well known algorithms. We then consider the memoryless state-dependent multiple-access channel (MAC) where the encoders and the decoder are provided with various degrees of asymmetric noisy channel state information (CSI). For the case where the encoders observe causal, asymmetric noisy CSI and the decoder observes complete CSI, inner and outer bounds to the capacity region, which are tight for the sum-rate capacity, are provided. Next, single-letter characterizations for the channel capacity regions under each of the following settings are established: (a) the CSI at the encoders are non-causal and asymmetric deterministic functions of the CSI at the decoder (b) the encoders observe asymmetric noisy CSI with asymmetric delays and the decoder observes complete CSI; (c) a degraded message set scenario with asymmetric noisy CSI at the encoders and complete and/or noisy CSI at the decoder. Finally, we consider the above state-dependent MAC model and identify what is required to be provided to the receiver in order to get a tight converse for the sum-rate capacity. Inspired by the coding schemes of the lossless CEO problem as well as of a recently proposed achievable region, we provide an inner bound which demonstrates the rate required to transmit this information to the receiver.
Download or read book Search Algorithms and Applications written by Nashat Mansour and published by BoD – Books on Demand. This book was released on 2011-04-26 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Search algorithms aim to find solutions or objects with specified properties and constraints in a large solution search space or among a collection of objects. A solution can be a set of value assignments to variables that will satisfy the constraints or a sub-structure of a given discrete structure. In addition, there are search algorithms, mostly probabilistic, that are designed for the prospective quantum computer. This book demonstrates the wide applicability of search algorithms for the purpose of developing useful and practical solutions to problems that arise in a variety of problem domains. Although it is targeted to a wide group of readers: researchers, graduate students, and practitioners, it does not offer an exhaustive coverage of search algorithms and applications. The chapters are organized into three parts: Population-based and quantum search algorithms, Search algorithms for image and video processing, and Search algorithms for engineering applications.
Download or read book Wireless Sensor Networks written by Ananthram Swami and published by John Wiley & Sons. This book was released on 2007-10-24 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wireless sensor network (WSN) uses a number of autonomous devices to cooperatively monitor physical or environmental conditions via a wireless network. Since its military beginnings as a means of battlefield surveillance, practical use of this technology has extended to a range of civilian applications including environmental monitoring, natural disaster prediction and relief, health monitoring and fire detection. Technological advancements, coupled with lowering costs, suggest that wireless sensor networks will have a significant impact on 21st century life. The design of wireless sensor networks requires consideration for several disciplines such as distributed signal processing, communications and cross-layer design. Wireless Sensor Networks: Signal Processing and Communications focuses on the theoretical aspects of wireless sensor networks and offers readers signal processing and communication perspectives on the design of large-scale networks. It explains state-of-the-art design theories and techniques to readers and places emphasis on the fundamental properties of large-scale sensor networks. Wireless Sensor Networks: Signal Processing and Communications : Approaches WSNs from a new angle – distributed signal processing, communication algorithms and novel cross-layer design paradigms. Applies ideas and illustrations from classical theory to an emerging field of WSN applications. Presents important analytical tools for use in the design of application-specific WSNs. Wireless Sensor Networks will be of use to signal processing and communications researchers and practitioners in applying classical theory to network design. It identifies research directions for senior undergraduate and graduate students and offers a rich bibliography for further reading and investigation.
Download or read book Transmitting and Gaining Data written by Rudolf Ahlswede and published by Springer. This book was released on 2014-11-15 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The calculation of channel capacities was one of Rudolf Ahlswede's specialties and is the main topic of this second volume of his Lectures on Information Theory. Here we find a detailed account of some very classical material from the early days of Information Theory, including developments from the USA, Russia, Hungary and (which Ahlswede was probably in a unique position to describe) the German school centered around his supervisor Konrad Jacobs. These lectures made an approach to a rigorous justification of the foundations of Information Theory. This is the second of several volumes documenting Rudolf Ahlswede's lectures on Information Theory. Each volume includes comments from an invited well-known expert. In the supplement to the present volume, Gerhard Kramer contributes his insights. Classical information processing concerns the main tasks of gaining knowledge and the storage, transmission and hiding of data. The first task is the prime goal of Statistics. For transmission and hiding data, Shannon developed an impressive mathematical theory called Information Theory, which he based on probabilistic models. The theory largely involves the concept of codes with small error probabilities in spite of noise in the transmission, which is modeled by channels. The lectures presented in this work are suitable for graduate students in Mathematics, and also for those working in Theoretical Computer Science, Physics, and Electrical Engineering with a background in basic Mathematics. The lectures can be used as the basis for courses or to supplement courses in many ways. Ph.D. students will also find research problems, often with conjectures, that offer potential subjects for a thesis. More advanced researchers may find questions which form the basis of entire research programs.
