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
Download or read book On Distributed Spread Spectrum Packet Radio Networks written by Elvino Silveira Sousa and published by . This book was released on 1985 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spread Spectrum Radio Networks written by Michael B. Pursley and published by . This book was released on 1987 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report for Contract DAAG29-84-K-008 (ARO Proposal 21576-EL) for the period June 22, 1984 to July 20, 1987. Keywords: Packet radio networks, Frequency-hop packet radio, Error-control coding, and Time-hopping.
Download or read book Frequency Hopped Spread Spectrum Packet Radio Networks written by KHAIRI ASHOUR. MOHAMED and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Performance of Cellular Frequency Hopped Spread Spectrum Radio Networks written by Jeffrey W. Gluck and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple access interference is characterized for cellular mobile networks, in which users are assumed to be Poisson-distributed in the plane and employ frequency-hopped spread-spectrum signaling with transmitter-oriented assignment of frequency-hopping patterns. Exact expressions for the bit error probabilities are derived for binary coherently demodulated systems without coding. Approximations for the packet error probability are derived for coherent and noncoherent systems and these approximations are applied when forward-error-control coding is employed. In all cases, the effects of varying interference power are accurately taken into account according to some propagation law. Numerical results are given in terms of bit error probability for the exact case and throughput for the approximate analyses. Comparisons are made with previously derived bounds and it is shown that these tend to be very pessimistic. Keywords: Communications network; Multiple access; Frequency hopping; Spread spectrum; Error control coding. (jhd).
Download or read book Performance of a Frequency Hop Spread Spectrum Multiple Access Radio Network in a Factory Environment written by Aquilino B. Orichi-Batajolo and published by . This book was released on 1994 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Packet Radio Networks in Spread spectrum Environment written by Mohsen Soroushnejad and published by . This book was released on 1990 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 425 written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal Receivers for Spread Spectrum Multiple Access Radio Networks written by Quang Duc Vo and published by . This book was released on 1987 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spread Spectrum Communications written by Marvin K. Simon and published by Computer Science Press, Incorporated. This book was released on 1985 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Spectrum Efficiency for Multiple Independent Spread spectrum Land Mobile Radio Systems written by Leslie A. Berry and published by . This book was released on 1978 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decentralized Channel Management in Scalable Multihop Spread Spectrum Packet Radio Networks written by Timothy Jason Shepard and published by . This book was released on 1995 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This thesis addresses the problems of managing the transmissions of stations in a spread-spectrum packet radio network so that the system can remain effective when scaled to millions of nodes concentrated in a metropolitan area. The principal difficulty in scaling a system of packet radio stations is interference from other stations in the system. Interference comes both from nearby stations and from distant stations. Each nearby interfering station is a particular problem, because a signal received from it may be as strong as or stronger than the desired signal from some other station. Far-off interfering stations are not individually a problem, since each of their signals will be weaker, but the combined effect may be the dominant source of interference. The thesis begins with an analysis of propagation and interference models. The overall noise level in the system (mainly caused by the many distant stations) is then analyzed, and found to remain manageable even as the system scales to billions of nodes. A scheme for designing a scalable packet radio network is then presented. Included is a method of scheduling packet transmissions to avoid collisions (caused by interference from nearby stations) without the need for global coordination or synchronization. Simulations of a system of one thousand stations are used to verify and illustrate the methods used. A method of choosing routes (minimum-energy routes) is demonstrated in simulation to produce a fully connected and functional network for one hundred and one thousand randomly placed stations. Unfortunately, congestion as the system scales is unavoidable if the traffic is not limited to some degree of locality. If traffic is limited to a few hops, then for a large system the techniques presented in this thesis are superior to ideal time division multiplexing of a clear channel."
Download or read book Spread Spectrum Mobile Radio Communications written by S. C. Gupta and published by . This book was released on 1984 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report, we present some additional results on the performance of Frequency Hopped Multilevel FSK (FH-MFSK) systems under mobile environment. This is followed by a review on packet radio networks and some results on the performance of a packet transmission technique in mobile radio channels. Simulation studies confirm the theoretical performance estimate of a FH-MFSK hard-limited receiver operating under adjacent cell interference conditions. Both simulation and approximate theoretical considerations testify the usefulness of a nonparametric receiver based on rank-sums. This receiver also possesses a robustness against changing probability models. It is believed that this receiver is a competing alternative to the parametric receivers, such as the hard-limited receiver. Originator-supplied keywords include: Spread Spectrum, Mobile Radio, Packet transmission, Packet Radio Network; and Adjacent Cell Interference.
