基于LDPC编码的交织分复用空时码系统  

Interleave-division-multiple space-time system using LDPC codes

作　　者：闫永瑞[1] 魏琴芳[1] 黎勇 王琳[1,3] 

机构地区：[1]重庆邮电大学编码技术研究所,重庆400065 [2]重庆盖尔乐普有限公司,重庆400065 [3]厦门大学通信工程系,厦门361005

出　　处：《重庆邮电大学学报（自然科学版）》2009年第1期57-60,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：教育部新世纪优秀人才支持计划项目(NCET-04-0601);重庆市科委自然科学基金项目(CSTC,2007BB2387)

摘　　要：交织分复用空时码(IDM-ST)技术是第四代移动通信的关键技术之一,设计了一种基于LDPC编码的交织分复用空时码系统,并将它与传统的基于卷积码编码的IDM-ST系统在准静态的瑞利衰落信道下进行了比较。仿真结果表明,在不同帧长,不同天线数情况下,基于LDPC编码的IDM-ST系统和基于卷积码编码系统各有其优势。整个系统具有接收简单,复杂度低等优点。在实际应用中,适合于高速的数据传输业务。IDM-ST is one of key technologies in the fourth generation of mobile telecommunication. A LDPC coded IDM-ST system was designed and it has been compared with a convolutional coded IDM-ST system over quasi-static Rayleigh fading channels. Simulation results show that the proposed system and the convolutional coded system have their own predominances with different frame length and different antenna numbers. The proposed system has simple receiver and low complexity. In practical application, it is very suitable for high-speed transmission operation.

关 键 词：交织分复用空时码(IDM—ST) LDPC码 卷积码 迭代接收 

分 类 号：TN911.23[电子电信—通信与信息系统]