Turbo-TCM系统中几种交织器的性能研究  

Research on the Performance of the Interleavers in Turbo-TCM

作　　者：禹永植[1] 毕文斌 张兴周[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]中船重工七院,北京100085

出　　处：《现代电子技术》2007年第23期47-50,共4页Modern Electronics Technique

摘　　要：研究了Turbo码与网格编码调制(TCM)相结合的Turbo-TCM技术,将Turbo码中三类奇偶交织器的设计分别应用到Turbo-TCM中,并在Awgn信道和Rayleigh衰落信道下,对采用三种不同交织方式、不同帧长Turbo-TCM的性能进行了仿真。仿真结果表明,短帧条件下,Awgn信道中采用确定性奇偶交织器的Turbo-TCM性能最优,而Rayleigh衰落信道中三种交织方式的Turbo-TCM性能相近。长帧条件下,Awgn信道和Rayleigh衰落信道中,基于随机奇偶交织器的Tur-bo-TCM性能最优。In this paper, we discuss the modulation techniques for combing turbo code with TCM, and apply three kinds of even - odd interleavers to Turbo - TCM. Then we simulate the performance of Turbo - TCM in Awgn and Rayleigh channels which use three different kinds of interleavers and different length of frame. The results show that, under condition of short frame, in Awgn channel, Turbo- TCM which use deterministic even- odd {nterleaver have best performance; in Rayleigh channel, the performances of Turbo- TCM based on three types of interleavers are similar. Under condition of long frame, in Awgn and Rayleigh channels,the performances of Turbo- TCM which use random even- odd interleaver have best performance.

关 键 词：Turbo—TCM 奇偶交织器 帧长 信号调制 

分 类 号：TN911.21[电子电信—通信与信息系统]