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在建立伽罗华城的基础上,对BCH码的编译过程进行软件模拟,所用信道是移动信道的三状态Markov模型。译码过程采用了简化译码法,使计算机量减少,机时缩短。最后得到了BCH码对移动通信性能改善的统计结果。比较了二组不同码长、每组又包括三种不同编码效率的六种BCH码——(63,45),(63,35),(63,24);(31,21,),(31,16),(31,11)——在典型移动信道中的性能改善。得出结论:BCH码用于移动信道进行差错控制,可提高移动通信的可靠性,且传信率越低,其纠错能力越高;但当用户对通信可靠性有特别高的要求时,用简单的BCH码进行差错控制就可能达不到要求了。
Based on the establishment of Galois City, the software simulation of BCH code compilation process is carried out. The used channel is the three-state Markov model of mobile channel. Decoding process uses a simplified decoding method to reduce the amount of computer, machine time shortened. Finally, we get the statistical result of improving the performance of mobile communication by BCH code. Comparing two groups of different code lengths, each group includes three kinds of six kinds of BCH codes with different coding efficiency - (63,45), (63,35), (63,24), (31,21), ( 31, 16), (31, 11) - performance improvement in a typical mobile channel. It is concluded that BCH code is used to control the error of mobile channel, which can improve the reliability of mobile communication. The lower the transmission rate, the higher the error correction capability. However, when the user has a particularly high demand for communication reliability, With a simple BCH code error control may not meet the requirements.