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交织技术对通信中信道编码性能具有重要影响,WCDMA系统中就多次采用了交织技术来提高通信质量。分析了交织技术原理及交织器的各种类型,利用SIMULINK模块库建立了交织器性能仿真模型,对各种分组交织器、随机交织器,以及同一交织器在不同交织长度下进行了仿真,通过比较各种交织器在加性高斯信道传输下的误比特率,最终得出各种情况下不同结构交织器的性能、交织长度对通信的影响及相应的选择原则。
The interleaving technique has an important influence on the channel coding performance in communication. The WCDMA system repeatedly uses the interleaving technique to improve the communication quality. The principle of interleaving technology and various types of interleaver are analyzed. The simulation model of interleaver performance is established by using SIMULINK module library, and various interleaver, random interleaver and interleaver are simulated under different interleaving length, The bit error rates of various interleavers in additive Gaussian channel transmission are compared. Finally, the performance of different structure interleavers and the effect of interleaving length on the communication under various conditions and corresponding selection principles are finally obtained.