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一前言衡量一个数据传输系统的重要指标是信息传输的可靠性,即误码率。它依赖的因素很多如信道类型,调制种类……等等。为提高信息传输的可靠性,遥控系统中使用纠错编码技术可以大大提高信息传输的可靠性。纠错编码中比较有效的是[15.7]循环码,其译码方法的关健是构造对最高位正交的校验方程和伴随式复位路线的设置等问题。本文在详细分析[15.7]循环码译码器工作原理之后,对如何构造正校一致校方程做了深入地讨论;证明了码组循环一周以后对每一位都能正交的问题;从理论上讨论了伴随式伴复位的问题,并给出复位方程式;其次讨论了[15.7]循环码在某遥控系统中使用所带来的好处(对误码率的改善);最后提出循环码的交错使用,以便对付突发干扰。
A foreword An important indicator of a data transmission system is the reliability of information transmission, ie the bit error rate. It depends on many factors such as channel type, modulation type ... and so on. In order to improve the reliability of information transmission, the use of error correction coding technology in remote control systems can greatly improve the reliability of information transmission. Error correction coding is more effective in [15.7] cyclic codes, the key to its decoding method is to construct the highest orthogonal parity equation and the accompanying reset path and other issues. After a detailed analysis of the working principle of the [15.7] cyclic code decoder, this paper discusses in detail how to construct a positive school uniform school equation. It proves that the code group can be orthogonal to each other one cycle later. Discussed the problem of the accompanying companion reset, and gave the reset equation; secondly, it discussed the benefits of using [15.7] cyclic codes in a remote control system (improved the bit error rate); finally, proposed the interleaving of cyclic codes Use in order to deal with sudden interference.