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本文叙述了如何应用多路交织分组循环码来实现提高短波数传终端机抗干扰性能。主要内容是:简单介绍单支分组循环码的基本原理,在单支、多支分组循环码的基础上,改进成多路交织分组循环码。构造编码监督方程式和译码纠错方程式,介绍纠错原理及纠错编、译码结构。在分析单支分组循环码纠错性能的基础上,讨论了多路交织分组循环码的纠错性能。并以外线试验的几组数据来说明。本文后面附较详细的四路交织(7.4)分组循环码编、译码方框原理图。
This paper describes how to use multiple interleaving packet cyclic code to improve shortwave data transmission terminal anti-jamming performance. The main contents are as follows: The basic principle of single-packet cyclic code is briefly introduced. Based on the single-branch and multi-branch cyclic codes, we improve the interleaving packet cyclic code. Construction coding supervisory equations and decoding error correction equations, introduced the principle of error correction and error correction coding, decoding structure. Based on the analysis of error correction performance of single packet cyclic codes, the error correction performance of multiple interleaved packet cyclic codes is discussed. And outside the test group of data to illustrate. This article is followed by a detailed four-way interlaced (7.4) packet cycle code, decoding block diagram.