Soft decision diversity coded DS/DPSK systems in pulse-jammed multipath-fading channels
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Authors
Victory, Charles W.
Subjects
Advisors
Therrien, Charles W.
Ha, Tri T.
Cristi, Roberto
Tummala, Murali
Larraza, Andres
Date of Issue
1999-03
Date
March, 1999
Publisher
Monterey, California: Naval Postgraduate School
Language
en_US
Abstract
The performance of a Direct Sequence Spread Spectrum system utilizing Differential Phase Shift-Keying modulation over a fading channel in the presence of pulse noise interference and additive white Gaussian noise is considered. Time and spatial diversity receivers utilizing various normalization schemes and post-detection selection combining are employed to overcome performance limitations inherent in the adverse environments. Numerical results are presented over a range of environmental conditions demonstrating the efficacy of such receivers. The performance analysis is extended through the utilization of convolutional coding and soft decision Viterbi decoding. Here the performance of the maximum likelihood decoding operation is expressed in terms of an equivalent uncoded system for both the Rayleigh and Rician fading channel with interference effects. Numerical results are then presented demonstrating the efficacy of such a receiver.
Type
Thesis
Description
Series/Report No
Department
Department of Electrical and Computer Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funding
Format
xxvi, 180 p.;28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.