短波FH/DQPSK系统中分组turbo码的性能分析  

Performance analysis of block turbo code in short wave for FH/DQPSK system

作　　者：甘良才[1] 马斌[1] 李伟华[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《通信学报》2002年第4期91-97,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(69772015)

摘　　要：本文基于短波跳频(FH)系统的特点,对短波FH/DQPSK系统中分组turbo码的性能进行了分析,并给出了平均误码上限的数学表达式。数值模拟的结果表明,采用分组turbo码编码的FH/DQPSK系统,在短波慢瑞利衰落的信道下,当译码迭代次数为4次,SNR=6.8dB时,可使系统的误码率降到10-5左右。Based on the characteristics of short wave FH system, the performance of block turbo code in a short wave frequency hopping (FH) system using DQPSK signal was analysed, we had given mathematic expressions of average error rate upper bound for block turbo codes in this system .Numerical simulation results showed that when the iteration is 4 times and SNR =6.8dB the FH/DQPSK system using block turbo code could reduce the bit error rate near to 10-5 in the slow Rayleigh fading short wave channel.

关 键 词：短波FH/DQPSK系统 分组TURBO码 性能分析 

分 类 号：TN911.22[电子电信—通信与信息系统] TN926.2[电子电信—信息与通信工程]