交织器最优化设计的理论分析基础及其工程仿真

The Theory Fundament and Engineering Simulation of The Optimum Design for Turbo-coding Interleaver

交织器的设计作为Turbo码技术的关键性的核心环节 ,一直缺乏系统的理论设计和明确的优化准则 .为此 ,本文首先探讨了交织器优化设计的理论基础和Turbo码性能卓越的深层原因 ,从码重分析 (空间离散 )和相关性分析 (时间离散 )两个方面建立交织器优化设计的数学模型 ,提出了单交织器设计的优化准则S6函数 .在此基础上 ,又提出了权位倒置交织器 ,经工程仿真证明性能良好 ,无论在理论分析方面还是在仿真数据上 ,其性能都明显优于 3GPP标准中 (3GTS 2 5 .2 12V3.3.0 )的mother-interleaver(文中称为标准交织 ) .

Turbo Interleaver has lacked systemic designing theory and explicit optimum criterion all the time.In this paper,the theory fundament will be discussed, and a multi-grade Math Model is to be founded from two aspects,code-weight analysis and correlativity analysis,in the meanwhile, optimum criterion of mono-interleaver-function S 6 is put forward.On the above basis,a novel weight -reverse interleaver is designed for the third-generation mobile communication system ,IMT2000,and computer simulation shows that its performance is excellent,both theory analysis and experiment simulation prove that it is much superior to mother -interleaver that is widely exploited at present in 3GPP standard (3G TS 25.212 V3.3.0).