Rician信道下串行级联Turbo码性能研究及改进  

A study of the performance and improvement of serially-concatenated Turbo codes under Rician channel

作　　者：李宏博[1] 陈树新[2] 

机构地区：[1]空军工程大学理学院,陕西西安710051 [2]空军工程大学电讯工程学院,陕西西安710077

出　　处：《中国电子科学研究院学报》2006年第3期273-276,共4页Journal of China Academy of Electronics and Information Technology

摘　　要：在Rician信道条件下,构建了一个通信系统模型,研究了串行级联Turbo码的性能并进行了仿真分析。在此基础上根据自适应滤波原理改进了原有系统模型。仿真结果表明,当主径衰落因子在一定范围内时,运用自适应滤波算法的改进模型可以提高系统性能,带来额外信噪比增益约0.5 dB。Under Rician channel, a communication system model is constructed and the serially-concatenated Turbo codes are applied to the model to study and simulate the system performance. According to the principles of adaptive filtering a modified system model is proposed later and its performance is also analyzed. Simulation results show that when the Rician factor is in certain appropriate ranges, the modified model can achieve an additional SNR gain of about 0.5 dB.

关 键 词：串行级联Turbo码 Rician分布 NLMS算法 横向滤波器 

分 类 号：TN915[电子电信—通信与信息系统]