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Author : Rajan Mani
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (183 download)
Download or read book Throughput Analysis of a Random Access Tree Protocol for Spread Spectrum Packet Radio Networks written by Rajan Mani and published by . This book was released on 1988 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Scott Storey
Publisher :
ISBN 13 :
Total Pages : 410 pages
Book Rating : 4.:/5 (227 download)
Download or read book Throughput Performance of Spread Spectrum Multiple Access Packet Radio Networks written by James Scott Storey and published by . This book was released on 1986 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, an integrated model of an unslotted spread spectrum multiple access (SSMA) packet radio network is developed. The model combines a detailed model of the radio channel, accounting for the effect of multi-user interference, with a network model that traces the evolution of the number of interfering transmissions and accounts for the half-duplex nature of the radios. A new analysis of the performance of a Viterbi decoder in a packet radio environment allows the model to be used for a system with convolutional Forward Error Correction (FEC) coding. The synchronization process is also analyzed and incorporated into the integrated model. The model makes use of several approximations for tractability. A discrete event simulation is used to validate these approximations. The integrated model leads to numerical results which show the throughput and the probability of success for a packet as a function of the channel level and network level parameters. Specifically, for the radio channel, these parameter include the modulation format, the received signal power, the spread spectrum bandwidth expansion, and the presence or absence of FEC coding. Also, the throughput is found as a function of the synchronization parameters, such as the detection thresholds and correlation times, for several different synchronization circuits and preamble structures. At the network level, the parameters are the traffic rate and the network size. The random access protocols considered include unslotted ALOHA and channel load sensing, which is an extension of carrier sensing to an SSMA network. (jhd).
Author :
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (227 download)
Download or read book A Random Access Algorithm for Frequency Hopped Spread Spectrum Packet Radio Networks written by and published by . This book was released on 1986 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors consider packet radio multi-user spread-spectrum environments, where frequency hopping spread spectrum techniques are deployed for protection against intelligent adversaries. When the users in such environments are mobile and bursty, random access frequency hopping transmission algorithms should be adopted, for efficiency in throughput and delay control. This paper proposes and analyzes such an algorithm, named Collision Resolution Algorithm for Frequency Hopping (CRAFH). The CRAFH is a limited sensing random access algorithm utilizing receiver oriented frequency hopping patterns. In its design, the experience from random access algorithms for non spread spectrum multi-user channels is utilized. Utilizing the regenerative character of the induced by the algorithm transmission process, the authors compute throughputs and expected per packet delays. In the presence of interferences between transmissions to different receivers, we compute throughputs, subject to an upper bound on the probability of erroneous data decoding. The CRAFH induces uniformly good delays within its stability region, and is particularly appropriate for environments where the users are highly mobile.
Author : Michael Georgiopoulos
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (227 download)
Download or read book A Random Access Algorithm for Direct Sequence Spread-Spectrum Packet Radio Networks written by Michael Georgiopoulos and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose and analyze a limited sensing random access algorithm, named CRADS, for a multi-user and multi-receiver direct sequence spread spectrum system. Utilizing the regenerative character of the induced by the algorithm output process, we compute throughputs subject to an upper bound on the probability of erroneous data decoding; we also compute the expected per packet delays. The CRADS induces uniformly good delays within its stability region, an is particularly appropriate for environments where the users are highly mobile. (Author).
Author : John Everett
Publisher : IET
ISBN 13 : 9780863412004
Total Pages : 586 pages
Book Rating : 4.4/5 (12 download)
Download or read book VSATs written by John Everett and published by IET. This book was released on 1992 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of a satellite communications network, VSATs allow earth terminals to be located on users' premises to provide data or voice and video services; they can be established rapidly and reconfigured to respond to changing communications needs flexibly and cost effectively. Twenty-eight contributions describe the key technology underlying these systems, representative systems from various vendors, budgets, protocols, service provision, economic, and regulatory issues. For those involved in telecommunications systems management or the engineering aspects. Annotation copyright by Book News, Inc., Portland, OR
Author : Gordon L. Stüber
Publisher : Springer Science & Business Media
ISBN 13 : 1475762682
Total Pages : 670 pages
Book Rating : 4.4/5 (757 download)
Download or read book Principles of Mobile Communication written by Gordon L. Stüber and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Mobile Communication provides an authoritative treatment of the fundamentals of mobile communications, one of the fastest growing areas of the modern telecommunications industry. The book stresses the fundamentals of mobile communications engineering that are important for the design of any mobile system. Less emphasis is placed on the description of existing and proposed wireless standards. This focus on fundamental issues should be of benefit not only to students taking formal instruction but also to practising engineers who are likely to already have a detailed familiarity with the standards and are seeking to deepen their knowledge of this important field. The book stresses mathematical modeling and analysis, rather than providing a qualitative overview. It has been specifically developed as a textbook for graduate level instruction and a reference book for practising engineers and those seeking to pursue research in the area. The book contains sufficient background material for the novice, yet enough advanced material for a sequence of graduate level courses. Principles of Mobile Communication treats a variety of contemporary issues, many of which have been treated before only in the journals. Some material in the book has never appeared before in the literature. The book provides an up-to-date treatment of the subject area at a level of detail that is not available in other books. Also, the book is unique in that the whole range of topics covered is not presently available in any other book. Throughout the book, detailed derivations are provided and extensive references to the literature are made. This is of value to the reader wishing to gain detailed knowledge of a particular topic.
Author :
Publisher :
ISBN 13 :
Total Pages : 930 pages
Book Rating : 4.:/5 (318 download)
Download or read book Proceedings of the 26th IEEE Conference on Decision and Control written by and published by . This book was released on 1987 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.:/5 (31 download)
Download or read book Research in Progress written by and published by . This book was released on 1991 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Clifford A. Lynch
Publisher : Pergamon
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.3/5 (91 download)
Download or read book Packet Radio Networks written by Clifford A. Lynch and published by Pergamon. This book was released on 1987 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 892 pages
Book Rating : 4.:/5 (31 download)
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:
Author :
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ISBN 13 :
Total Pages : 1948 pages
Book Rating : 4.3/5 (243 download)
Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph M. Hanratty
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (25 download)
Download or read book Performance Analysis of Hybrid ARQ Protocols in a Slotted Code Division Multiple-Access Network written by Joseph M. Hanratty and published by . This book was released on 1989 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A link throughput-delay analysis is presented for a slotted direct-sequence spread-spectrum multiple-access packet radio network (PRN) operating in the presence of background noise, multiple-access interference, and pulsed jammer noise. The PRN is comprised of an arbitrary number of full-duplex radio units arranged in a paired-off topology. Slotted ALOHA random access is used in conjunction with CDMA for channel access and a type I hybrid ARQ is used for error control. Expression are derived for the link throughput-delay in terms of the channel cutoff rate and capacity. With the friendly objective of maximizing the link throughput, and the enemy objective of minimizing the link throughput, the dependency of the optimal retransmission probability, processing gain, code rate, and jamming fraction on the population size, traffic intensity, bit energy-to-background-noise ratio, is examined in detail. It is shown that properly designed (optimized) PRN using random-access CDMA offers a significantly larger heavy load throughput than a random-access PRN. Theses. (RH).
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ISBN 13 :
Total Pages : 772 pages
Book Rating : 4.E/5 ( download)
Download or read book Conference Record written by and published by . This book was released on 1990 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Institute of Electrical and Electronics Engineers
Publisher :
ISBN 13 :
Total Pages : 624 pages
Book Rating : 4.3/5 (91 download)
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1989 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
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ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.0/5 ( download)
Download or read book Crisis Communications, the Promise and Reality written by and published by . This book was released on 1987 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Georgiopoulos
Publisher :
ISBN 13 :
Total Pages : 294 pages
Book Rating : 4.:/5 (167 download)
Download or read book Random Access Algorithms in Multi-user Communication Systems for Spread Spectrum and Non-spread-spectrum Environments written by Michael Georgiopoulos and published by . This book was released on 1986 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 718 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1991 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
