Performance Of Cellular Frequency Hopped Spread Spectrum Radio Networks
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Performance Of Cellular Frequency Hopped Spread Spectrum Radio Networks
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Author : Jeffrey W. Gluck
language : en
Publisher:
Release Date : 1989
Performance Of Cellular Frequency Hopped Spread Spectrum Radio Networks written by Jeffrey W. Gluck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
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).
425
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Author :
language : en
Publisher:
Release Date : 1986
425 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
Performance Of A Frequency Hop Spread Spectrum Multiple Access Radio Network In A Factory Environment
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Author : Aquilino B. Orichi-Batajolo
language : en
Publisher:
Release Date : 1994
Performance Of A Frequency Hop Spread Spectrum Multiple Access Radio Network In A Factory Environment written by Aquilino B. Orichi-Batajolo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Spread spectrum communications categories.
Radio Resource Management
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Author : Source Wikipedia
language : en
Publisher: University-Press.org
Release Date : 2013-09
Radio Resource Management written by Source Wikipedia and has been published by University-Press.org this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 70. Chapters: Code division multiple access, Spread spectrum, Frequency-hopping spread spectrum, Software-defined radio, MIMO, 2G spectrum scam, PU2RC, Cellular network, Precoding, Multi-user MIMO, Cognitive radio, Handover, Cooperative diversity, 3G MIMO, CDMA spectral efficiency, Diversity combining, Antenna diversity, Channel state information, Cellular traffic, Cellular frequencies, History of wireless mesh networking, Frequency allocation, Trunked radio system, Zero-forcing precoding, Mobile ad hoc network, Single-frequency network, Channel allocation schemes, Spatial multiplexing, Diversity scheme, Maximum throughput scheduling, Proportionally fair, Space-time block coding based transmit diversity, Open spectrum, Multi-frequency network, Space-time code, Power control, Co-channel interference, Link adaptation, Hierarchical modulation, Dynamic single-frequency networks, Radio Link Protocol, Many antennas, Macrodiversity, IEEE 802.11k-2008, Soft handover, IEEE 802.11h-2003, Single antenna interference cancellation, Reconfigurability, Dynamic bandwidth allocation, Spatial capacity, Cyclic delay diversity, Signal-to-interference ratio, Bandplan, Cell breathing, SURAN, Diversity gain, Time diversity, Rxqual, Carrier-to-noise-density ratio, Diversity Coding.
Spread Spectrum Mobile Radio Communications
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Author : S. C. Gupta
language : en
Publisher:
Release Date : 1984
Spread Spectrum Mobile Radio Communications written by S. C. Gupta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
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.
Spectrum Efficiency For Multiple Independent Spread Spectrum Land Mobile Radio Systems
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Author : Leslie A. Berry
language : en
Publisher:
Release Date : 1978
Spectrum Efficiency For Multiple Independent Spread Spectrum Land Mobile Radio Systems written by Leslie A. Berry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Radio frequency allocation categories.
Spread Spectrum In Mobile Communication
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Author : Olav Berg
language : en
Publisher: IET
Release Date : 1998
Spread Spectrum In Mobile Communication written by Olav Berg and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Technology & Engineering categories.
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
Performance Of Fast Frequency Hopping Diversity Combiners In Multiple Access Interference For Ad Hoc Networks
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Author : Helene Ejenyi Tayong
language : en
Publisher:
Release Date : 2006
Performance Of Fast Frequency Hopping Diversity Combiners In Multiple Access Interference For Ad Hoc Networks written by Helene Ejenyi Tayong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Dissertations, Academic categories.
The objective of this work is to evaluate the performance of fast frequency-hopping diversity combiners in multiple access interference for ad hoc networks. Multiple access interference (MAI) is the interference that is common in a network with many devices sharing the channel. A model developed in, i.e. the alpha-stable distribution suggested for modeling impulsive signals, is investigated to characterize MAI for an ad hoc network. Impulsive processes are characterized by the presence of spikes or extreme outliers. As such, their probability density functions (pdfs) have heavier tails. Such impulsive behaviors have been verified experimentally in various radio and underwater acoustic channels. The characteristic exponent (the parameter alpha) controls the impulsive behavior of the process. Techniques based on characteristic functions, the Fourier transform of the probability density function (pdf), are used to calculate the probability of error since no-closed form exists for their distributions. Frequency-hopping spread spectrum (FHSS) multiple access radio networks using the same modulation and power is considered. FHSS is a powerful technique used in communication systems to provide protection against jamming and fading. The problem is applicable in wireless random-access communication systems where information about transmitters' positions is not provided. The signal strength attenuates with distance. The focus is on Fast Frequency-hopping (FFH) in order to exploit frequency diversity; a condition where the same data bit is transmitted on multiple independently faded hops. A modulation technique called frequency hopping multilevel frequency shift keying (FH-MFSK) is used to allow many users to effectively share the same frequency band. The Reduced Fuzzy Rank Order Detector (R-FROD), a FFH diversity combiner is studied in this interference environment and its performance is compared with that of hard decision majority vote (HDMV) detector, maximum rank sum receiver (MRSR) and order statistic normalized envelope detector (OS-NED). Simulation results show that the R-FROD is able to outperform the MRSR, OS-NED and HDMV detectors across a range of values for alpha. R-FROD is analyzed in alpha-stable environment using Gaussian and Cauchy membership functions. Simulation results show that either membership function can be used in R-FROD to analyze its performance in an alpha-stable environment. Increasing the hop sequence length reduces the probability of error. The analysis presented is important in the design of efficient interference suppression techniques and in solving mobile wireless communication systems. -- Abstract.
Performance Of Frequency Hopping Spread Spectrum Mobile Radio Systems
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Author : Ramanarayanan Viswanathan
language : en
Publisher:
Release Date : 1983
Performance Of Frequency Hopping Spread Spectrum Mobile Radio Systems written by Ramanarayanan Viswanathan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Spread Spectrum Communications Handbook Electronic Edition
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Author : Marvin K. Simon
language : en
Publisher: McGraw Hill Professional
Release Date : 2001-09-22
Spread Spectrum Communications Handbook Electronic Edition written by Marvin K. Simon and has been published by McGraw Hill Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-09-22 with Technology & Engineering categories.
The acknowledged Spread-Spectrum Bible the most complete reference in the field! INCLUDESCD-ROM CONTAININGTHE ENTIRE BOOKIN FULLY-SEARCHABLE PDF Spread-spectrum systems have found important commercial applications in CDMA cellular networks and wireless personal communication networks. Communications engineers and technicians now have ready access to a wealth of spread-spectrum information in this exhaustive handbook the most comprehensive and authoritative compendium on spread-spectrum systems available anywhere. Written by recognized authorities in the field, the Handbook presents both theoretical basics and practical applications, providing succinct, results-oriented solutions to engineering problems. Starting with basic concepts and system models, the book covers: Anti-jamming communication systems Coherent direct-sequence systems Non-coherent frequency-hopped systems Coherent and differentially coherent modulation techniques Pseudonoise acquistion and tracking in direct sequence receivers Time and frequency synchronization of frequency-hopped receivers Low probability of intercept communications In addition, it offers an in-depth look at multiple access communications and positioning systems and discusses the growth of spread-spectrum applications. INCLUDES CD-ROM CONTAINING THE ENTIRE BOOK IN FULLY SEARCHABLE PDF