Antijam Capability of Frequency-Hop Spread-Spectrum with Reed-Solomon Coding

M. Pursley, W. Stark
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引用次数: 11

Abstract

This paper is concerned with increasing the antijam (AJ) capability of frequency-hop spread-spectrum through the use of diversity transmission, Reed-Solomon coding, and a parallel errors and erasures decoding algorithm. The goals are twofold. First it is desirable to increase the jamming margin against a partial-band noise jammer by use of coding and diversity with an efficient error-correction algorithm. Second, it is necessary to totally eliminate the threat of a narrowband jammer (regardless of the jammer's power level) in order to have an effective AJ system. Through an analysis of the effects of partial-band jamming on a frequency-hop spread-spectrum system with diversity, it is shown that the use of Reed-Solomon coding with a parallel errors and erasures decoding algorithm accomplishes these goals. The paper also investigates the accuracy of the Chernoff bound as an approximation to the true performance of a frequency-hop spread-spectrum communication system with diversity, side information, and Reed-Solomon coding. The performance results presented in the paper are exact results based on analysis and computer evaluation and approximate results based on the Chernoff bound. It is shown that the Chernoff bound gives a very poor approximation for many cases of interest.
基于Reed-Solomon编码的频跳扩频抗干扰能力
本文通过使用分集传输、Reed-Solomon编码和并行错误和擦除译码算法来提高频跳扩频的抗干扰能力。目标是双重的。首先,希望通过使用具有有效纠错算法的编码和分集来增加对部分频带噪声干扰器的干扰余量。其次,为了拥有一个有效的AJ系统,有必要完全消除窄带干扰机的威胁(无论干扰机的功率水平如何)。通过分析部分频带干扰对分集频跳扩频系统的影响,表明采用Reed-Solomon编码和并行错误和擦除译码算法可以实现这些目标。本文还研究了Chernoff界作为具有分集、边信息和里德-所罗门编码的频跳扩频通信系统真实性能的近近值的准确性。本文给出的性能结果是基于分析和计算机评价的精确结果和基于切尔诺夫界的近似结果。结果表明,切尔诺夫界对于许多有意义的情况给出了一个很差的近似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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