SW-Log-MAP译码算法在3G移动通信中的应用  

Application of SW-Log-MAP Decoding Algorithm in 3G Mobile Communication

作　　者：于秀兰[1] 殷茜[1] 冉静 

机构地区：[1]重庆邮电大学,重庆400065 [2]北京大唐集团,北京100038

出　　处：《微电子学》2006年第5期638-641,650,共5页Microelectronics

摘　　要：SW-Log-MAP译码算法在传统Turbo译码算法Log-MAP的基础上进行了改进,在保证译码性能的前提下,大大降低其运算复杂度,并将滑动窗的方法应用于译码模块,大大减少了存储空间;并且,在简化后的Turbo译码器基础上,通过仿真,对Turbo码的误码率性能进行研究,分析交织长度、滑动窗、纠正函数等因素对于译码性能的影响。Based on the conventional Log-MAP decoding algorithm of turbo code, an improved SW-Log-MAP algorithm is proposed, which, by using sliding-window algorithm, greatly reduces the computational complexity and memory space without performance degradation. Based on the improved decoding structure, the improved algorithm is simulated to evaluate the influence of the parameters on performance of the turbo codes, such as interleave length, sliding window, error correct function and so on.

关 键 词：TURBO码 3G移动通信 Log—MAP算法 SW-Log—MAP算法 

分 类 号：TN912.3[电子电信—通信与信息系统]