Download or read book The Effects of a Multipath Channel and Interference on Coherent M PSK Digital Communication Systems written by and published by . This book was released on 1993 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report derives expressions for the average probability of symbol error of coherent M-ary phase-shift-keyed (M-PSK) communication system operating under the following nonideal conditions: (1) time-invariant multipath channel consisting of a direct path and a single multipath, (2) intentional/ unintentional interference consisting of either a continuous wave (CW) signal or a bandpass filtered white Gaussian noise signal (bandwidth is variable), and (3) additive white Gaussian noise. Exact solutions are derived for coherent binary phase shift-keyed (BPSK) while both exact and upper bound solutions (shown to be tighter than the Chernoff bound) are derived for coherent M-PSK. One particular example, line-of-sight ultrahigh frequency (LOS UHF) radio, is used extensively to exercise the derived expressions and illustrate typical system performance. These results pertain to receiver with no means of compensation for the nonideal channel conditions. Methods of compensation for multipath and interference, like adaptive equalization, beamforming, spatial diversity, and multichannel adaptive equalization, are presently under investigation by the authors. The results in this report will help determine the performance gain offered by these methods of compensation.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digital Communication over Fading Channels written by Marvin K. Simon and published by John Wiley & Sons. This book was released on 2005-02-11 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four short years since Digital Communication over Fading Channels became an instant classic have seen a virtual explosion of significant new work on the subject, both by the authors and by numerous researchers around the world. Foremost among these is a great deal of progress in the area of transmit diversity and space-time coding and the associated multiple input-multiple output (MIMO) channel. This new edition gathers these and other results, previously scattered throughout numerous publications, into a single convenient and informative volume. Like its predecessor, this Second Edition discusses in detail coherent and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. The moment generating function (MGF)-based approach for performance analysis, introduced by the authors in the first edition and referred to in literally hundreds of publications, still represents the backbone of the book's presentation. Important features of this new edition include: * An all-new, comprehensive chapter on transmit diversity, space-time coding, and the MIMO channel, focusing on performance evaluation * Coverage of new and improved diversity schemes * Performance analyses of previously known schemes in new and different fading scenarios * A new chapter on the outage probability of cellular mobile radio systems * A new chapter on the capacity of fading channels * And much more Digital Communication over Fading Channels, Second Edition is an indispensable resource for graduate students, researchers investigating these systems, and practicing engineers responsible for evaluating their performance.
Download or read book The Effect of Multipath on Digital Communications Systems With Application to Space Station written by William J. Toti and published by . This book was released on 1986 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of the effect of multipath propagation on digital communications systems was conducted. A brief overview of the root causes of multipath propagation was included in this discussion. Probabilities of error were then derived for a generalized digital communications system experiencing Rician fading due to multipath propagation. Exact results were obtained for equiprobable M-ary Frequency Shift Keyed and M-ary Phase Shift Keyed modulation schemes used to transmit digital data. Furthermore, the probability of error was obtained for a generalized digital communication system experiencing single-bit Intersymbol Interference due to multipath propagation. Finally, the performance of digital communication links for NASA's Space Station operating in the presence of Intersymbol Interference was evaluated. Results obtained tend to show that severe communication system performance degradation may occur on those links under certain transmitter/receiver and Space Station geometries. (Thesis).
Download or read book Channel Estimate based Performance Prediction for Coherent Linearly Modulated Wireless Communications Systems written by Thomas L. Staley and published by . This book was released on 1997 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communication Systems and Techniques written by Mischa Schwartz and published by John Wiley & Sons. This book was released on 1995-11-22 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introductory, graduate-level look at modern communications in general and radio communications in particular. This seminal presentation of the applications of communication theory to signal and receiver design brings you valuable insights into the fundamental concepts underlying today's communications systems, especially wireless communications. Coverage includes: AM, FM Phase Modulation, PCM, fading, and diversity receivers. This is a classic reissue of a book published by McGraw Hill in 1966.
Download or read book Japanese Science and Technology 1983 1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Best of the Best written by William H. Tranter and published by John Wiley & Sons. This book was released on 2007-01-09 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Best of the Best: Fifty Years of Communications and Networking Research consists of a group of 50 papers selected as the best published by ComSoc in its various journals in the Society’s 50-year history. The editors of the collection have written an essay to introduce the papers and discuss the historical significance of the collection and how they were selected for the collection. The book divides the papers into two major categories (Communications and Networking) and groups them by decade within these major subdivisions.
Download or read book Synchronization in Digital Communication Systems written by Fuyun Ling and published by Cambridge University Press. This book was released on 2017-06-22 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical guide helps readers to learn how to develop and implement synchronization functions in digital communication systems.
Download or read book Digital Communication Over Fading Channels written by Marvin K. Simon and published by Wiley-IEEE Press. This book was released on 2005 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
Download or read book Digital Communications with Chaos written by Wai M Tam and published by Elsevier. This book was released on 2010-07-07 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1970's, there has been a great deal of research effort spent on studying chaotic systems and the properties of the chaotic signals generated. Characterized by their wideband, impulse-like autocorrelation and low cross-correlation properties, chaotic signals are useful spread-spectrum signals for carrying digital information. Spectrum spreading has become one of the most popular modulation techniques for high-speed wireless communications. It makes use of signals of very wide bandwidth to carry information at relatively low data rates, and possesses advantages such as low probability of interception, resistance to jamming, multiple-access capability and mitigation to multipath effect, which are particularly important in a wireless scenario. In addition to enjoying the aforementioned benefits, chaotic signals can be generated using simple circuitries, thus lowering the cost of transceivers. Early study of chaos-based communication systems was focused on a single-user case. In the past few years, more effort has been put on investigating systems with multiple-access capability, which is a key feature of spread-spectrum communication systems. Digital Communications with Chaos presents a detailed study of some multiple-access schemes used for chaos-based communications, and evaluates their performance. In addition, the effectiveness of the multiuser detection techniques, whose primary objective is to reduce interference between users and hence improve performance, is evaluated in the context of multiple-access digital communication systems. Hot research topic Describes communication technologies for the future Authors among the pioneers researching in chaos-based communications
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1990 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
Download or read book Satellite Communication Systems Design written by S. Tirró and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 851 pages. Available in PDF, EPUB and Kindle. Book excerpt: Writing a comprehensive book on satellite communications requires the com mand of many technical disciplines and the availability of up-to-date information on international recommendations, system architectures, and equipment stand ards. It is therefore necessary to involve many authors, each possessing a good level of knowledge in a particular discipline. The problem of using a coherent and unambiguous set of definitions and basic terms has been solved by including in the book all the background information needed for understanding satellite communication systems, without any major reference to other textbooks specializing in particular disciplines. The obvious consequence of this approach has been the large size of the book, with the advantages, however, of practically complete independence from other books, more systematic discussion of the subject matter, and better readability. After the required background information, emphasis has been placed on the discussion of techniques and system design criteria rather than on specific equipment implementation or description of particular systems. The book may be divided in five parts as follows: • The first five chapters provide most of the required background information. • Chapter 6 is an introductory outline of satellite communication systems. • Chapters 7 to 13 deal with the various aspects of technical system design. • Chapter 14 discusses system economics. • Chapter 15 provides a brief insight into some foreseeable future develop ments of satellite communications.
Download or read book Introduction to Digital Communications written by Ali Grami and published by Academic Press. This book was released on 2015-02-25 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Digital Communications explores the basic principles in the analysis and design of digital communication systems, including design objectives, constraints and trade-offs. After portraying the big picture and laying the background material, this book lucidly progresses to a comprehensive and detailed discussion of all critical elements and key functions in digital communications. The first undergraduate-level textbook exclusively on digital communications, with a complete coverage of source and channel coding, modulation, and synchronization. Discusses major aspects of communication networks and multiuser communications Provides insightful descriptions and intuitive explanations of all complex concepts Focuses on practical applications and illustrative examples. A companion Web site includes solutions to end-of-chapter problems and computer exercises, lecture slides, and figures and tables from the text
Download or read book Refined Techniques for Blind Equalization of Phase Shift Keyed PSK and Quadrature Amplitude Modulated QAM Digital Communications Signals written by Roy Axford and published by . This book was released on 1995 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EurAsia ICT 2002 Information and Communication Technology written by M. Hassan Shafazand and published by Springer. This book was released on 2003-06-30 with total page 1043 pages. Available in PDF, EPUB and Kindle. Book excerpt: We welcomed participants to the 1st EurAsian Conference on Advances in Information and Communication Technology (EurAsia ICT 2002) held in Iran. The aim of the conference was to serve as a forum to bring together researchers from academia and commercial developers from industry to discuss the current state of the art in ICT, mainly in Europe and Asia. Inspirations and new ideas were expected to emerge from intensive discussions during formal sessions and social events. Keynote addresses, research presentation, and discussion during the conference helped to further develop the exchange of ideas among the researchers, developers, and practitioners who attended. The conference attracted more than 300 submissions and each paper was reviewed by at least three program committee members. The program committee selected 119 papers from authors of 30 different countries for presentation and publication, a task which was not easy due to the high quality of the submitted papers. Eleven workshops were organized in parallel with the EurAsia ICT conference. The proceedings of these workshops, with more than 100 papers, were published by the Austrian Computer Society. We would like to express our thanks to our colleagues who helped with putting together the technical program: the program committee members and external reviewers for their timely and rigorous reviews of the papers, and the organizing committee for their help in administrative work and support. We owe special thanks to Thomas Schierer for always being available when his helping hand was needed.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1994 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
