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Author : Dana John Taipale
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (128 download)
Download or read book Direct-sequence Spread-spectrum Packet Radio Performance written by Dana John Taipale and published by . This book was released on 1984 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James S. Storey
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (227 download)
Download or read book Throughput Performance of a Direct Sequence CDMA Packet Radio Network written by James S. Storey and published by . This book was released on 1985 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Code Division Multiple Access (CDMA) spread spectrum packet radio network model is presented. The topology is a single-hop fully connected network with identical users. The network model allows the performance of the radio links to be specified in detail. A model of a BPSK Direct Sequence (DS) CDMA radio channel with convolutional Forward Error Correction (FEC) coding is used. A refinement of the network model takes into account the restriction that half-duplex radios cannot transmit and receive simultaneously. Single hop throughput and probability of successful first transmission are derived. The effects on throughput and probability of successful first transmission are derived. The effects on throughput of the received signal strength Eb/No, the number of chips per bit N and the number of users M are shown. A channel load sense access protocol is introduced in which radios are blocked from transmitting when the channel is heavily loaded. The increase in throughput due to this protocol is shown for zero and for non-zero propagation delay. (rh).
Author : Robert K Morrow (Jr)
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (227 download)
Download or read book Bit-to-Bit Error Dependence in Direct-Sequence Spread-Spectrum Multiple-Access Packet Radio Systems written by Robert K Morrow (Jr) and published by . This book was released on 1988 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slotted direct-sequence spread-spectrum multiple-access (DS/SSMA) packet broadcasting systems with random signature sequences are analyzed within the framework of the lower three layers of the International Standards Organization Reference Model of Open Systems Interconnection. At the physical layer, we show that a widely-used Gaussian approximation (which we call the Standard Gaussian Approximation) for the probability of data bit error in a chip and phase asynchronous system is accurate only when there are a large number of simultaneous users on the channel; otherwise, this approximation can be optimistic by several orders of magnitude. For interfering signals with fixed delays and phases relative to the desired signal, however, the Standard Gaussian Approximation is quite accurate for any number of simultaneous users. To obtain a closer approximation to the probability of data bit error for an asynchronous system, we introduce the Improved Gaussian Approximation, which involves finding the distribution of the multiple-access interference variance over all possible delay and phase values and then taking a Gaussian approximation over the support of the distribution and averaging the results. To accurately analyze packet performance at the data link layer, we first use the theory of moment spaces to gain insight on the effect of bit-to-bit error dependence caused by the constant relative delays and (possibly) phases of the interfering signals over the duration of a desired packet. (rh).
Author : Soo (Samuel) Kyung Lee
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (837 download)
Download or read book On the Performance of Distributed Spread Spectrum Packet Radio Networks with and Without Acknowledgements written by Soo (Samuel) Kyung Lee and published by . This book was released on 1986 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhen-liang Shi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (319 download)
Download or read book Acquisition Techniques for Direct Sequence Spread Spectrum Packet Radio Systems written by Zhen-liang Shi and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Olav Berg
Publisher : IET
ISBN 13 : 9780852969359
Total Pages : 480 pages
Book Rating : 4.9/5 (693 download)
Download or read book Spread Spectrum in Mobile Communication written by Olav Berg and published by IET. This book was released on 1998 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a technology that adapts radio communication to computational data information processing networks, first reviews the concepts of modern mobile communication and the user requirements and operational environment that influence the design of mobile systems. Then focuses on mobility issues for a decentralized network topology and the effects of spread spectrum modulation on radios used in packet-switched networks. Shows how connecting radio terminals using packet switching provides a highly flexible and efficient solution for mobile users. Annotation copyrighted by Book News, Inc., Portland, OR
Author : Mun Geon Kyeong
Publisher :
ISBN 13 :
Total Pages : 472 pages
Book Rating : 4.:/5 (323 download)
Download or read book Spread Spectrum Slotted ALOHA Packet Radio Networks with Near- Perfect Multi-packet Capture written by Mun Geon Kyeong and published by . This book was released on 1993 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karthik Gajaraj
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (577 download)
Download or read book An Adaptive Transmission Protocol for Direct Sequence Spread Spectrum Packet Radio Networks written by Karthik Gajaraj and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nersi Nazari
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (181 download)
Download or read book The Performance of Direct-sequence Spread-spectrum Multiple-access Systems Including Jamming and Partial Code Correlation Effects written by Nersi Nazari and published by . This book was released on 1987 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stanford University. Computer Systems Laboratory
Publisher :
ISBN 13 :
Total Pages : 205 pages
Book Rating : 4.:/5 (123 download)
Download or read book Thoughput Performance of Spread Spectrum Multiple Access Packet Radio Networks written by Stanford University. Computer Systems Laboratory and published by . This book was released on 1987 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert K. Morrow
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (17 download)
Download or read book Bit-to-bit error dependence in direct-sequence spread-spectrum multiple-access packet radio systems written by Robert K. Morrow and published by . This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Osmund S. Desouza
Publisher :
ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (17 download)
Download or read book Performance analysis and charakterization of spread spectrum packet radio networks written by Osmund S. Desouza and published by . This book was released on 1990 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 : Haiping Tsou
Publisher :
ISBN 13 :
Total Pages : 882 pages
Book Rating : 4.:/5 (314 download)
Download or read book On the Performance of the Direct-sequence Spread-spectrum Code Tracking in the Presence of Cyclostationary Interference written by Haiping Tsou and published by . This book was released on 1992 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James P. Stephens
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (227 download)
Download or read book Direct-Sequence Spread Spectrum System written by James P. Stephens and published by . This book was released on 1990 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to construct and evaluate the performance of a direct-sequence spread spectrum (DSSS) system. The system, based upon a previously published design, uses a special type of injection-locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating spread spectrum principles and allows researchers to evaluate their own sub-system design concepts. The DSSS system, designed as a one-way link in the 420-450 MHz band, is constructed to operate in accordance with Federal Communications Commission rules and regulations pertaining to the Amateur Radio Service (Part 97). Unlike conventional DSSS systems which combine digital data with a pseudorandom (PN) code sequence, the system described here directly modulates an FM modulated carrier with the PN code sequence. (RRH).
Author : Thomas D. Papavassiliou
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (391 download)
Download or read book On Modeling, Performance Analysis and Design of Spatially Distributed Spread Spectrum Packet Radio Networks written by Thomas D. Papavassiliou and published by . This book was released on 1992 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Steven Schmidt
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (227 download)
Download or read book Sequence Selection for Spread-spectrum Packet Radio Systems written by Mark Steven Schmidt and published by . This book was released on 1983 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: A direct-sequence spread-spectrum scheme is applied to multiple-access packet radio systems. Algorithms that find signature sequence phases of Gold sequences with low correlation parameter values are explored. The average probabilities of error for sets of Gold sequences are shown to be dependent on the phases of the sequences. Keywords: Packet radio, Spread spectrum, Multiple access. (rh).
