摘要
介绍了Turbo码的译码原理 .根据软输入、软输出的译码结构 ,阐述了Turbo码的最大后验概率译码算法———MAP算法 .在推导了MAP算法的基础上 ,应用衰减因子的简化算法 ,提出了一种改进的译码方法 .仿真结果表明 。
This paper introduces the principle of the Turbo-code decoding algorithms, and discusses the Maximum A Posteriori decoding Algorithm-MAP mainly according to the soft-in-soft-out structure of Turbo-codes. An improved decoding algorithm is expounded by using fading factor based on the derivation of MAP. Simulation results show that it can improve the performance of the Turbo-codes decoding.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第2期78-80,共3页
Journal of Daqing Petroleum Institute
