【摘要】 主要研究卫星通信协议IESS 309协议中的系统卷积码的编码及其序列译码的计算机模拟。用C语言实现了码率为1/2的36位的系统卷积码的编码,然后模拟高斯噪声信道生成一个Fano度量表,最后用Fano算法实现该卷积码的软判决序列译码,并进行了性能分析,为以后的工程应用打下一个良好的基础。更多还原

【Abstract】 The sequential decoder of systematic convolutional code in IESS-309 is discussed in the paper.The rate 1/2 systematic convolutional encoder is implemented with C language.Assuming the channel is(corrupted) by Gaussian noise,the metric table is generated.And then using Fano algorisms,it implements the softdecision sequential decoding of systematic convolutional code and analyzes the properties,which play a good foundation for the future engineering application.更多还原