基于Turbo编译码方案的BPSK系统性能研究  

A study of the performance of a BPSK communication system based on Turbo encoding and decoding scheme

作　　者：李宏博[1] 陈树新[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《陕西理工学院学报（自然科学版）》2006年第1期39-41,47,共4页Journal of Shananxi University of Technology:Natural Science Edition

摘　　要：在介绍Turbo码编、译码原理的基础上,建立一个典型BPSK通信系统模型,将Turbo码与其它编码方式分别运用于该系统模型,通过Matlab仿真,研究、分析了系统在不同编译码方式下的误比特性能。仿真结果表明,Turbo编译码方案在差错控制和纠错方面性能明显优于目前广泛应用的卷积码及其它线性分组码。在误比特率达到10-5时,Turbo码的编码增益比其它编码方式高出1.5 dB以上。On the basis of introducing the principles of Turbo encoding and decoding scheme, a typical BPSK communication system model is preseated. Turbo encoding and decoding scheme is applied to this model as well as the other schemes. The bit - error performance of this system model to which different encoding and decoding schemes are applied is studied and analyzed by means of Maflab simulation. It is shown that concerning error control and correction, Turbo codes have significant performance advantage over the widely - used convolutional codes and linear block codes. When BER reaches the level of 10^-5, the coding gain resulting from Turbo codes is higher than those from other codes by at least 1.5dB.

关 键 词：TURBO码 交织器 迭代译码 BPSK 

分 类 号：TN914[电子电信—通信与信息系统]