摘要
采用扩展汉明码作为Turbo乘积码 (TPC)的子码时,与传统的Chase算法相比,Cyclic-2PML(循环 2伪最大似然)算法复杂度低。本文研究了基于该算法的TPC在高速移动通信系统中的译码方法,仿真比较了采用不同子码组合的TPC结合不同的调制方式在高斯信道和多径衰落信道中的性能。结果表明,以(32, 26, 4)扩展汉明码为子码的TPC,不仅具有较高的码率,同时可以获得更好的误比特率性能。
Cyclic-2 PML (Pseudo Maximum Likelihood) algorithm is of lower complexity compared with the traditional Chase algorithm when extended hamming code is used as the sub-code of Turbo Product Code(TPC). Based on Cyclic-2 PML algorithm, this paper studies the decoding of TPC in high-speed mobile communication systems, and the performance of TPC with different sub-codes and different modulation types are given for the Additive White Gaussian Noise (AWGN) and multipath fading channels. Simulation results show that TPC with (32,26,4) extended hamming code as sub-code can achieve better Bit Error Rate (BER) with a higher code rate.
出处
《电讯技术》
2005年第1期67-71,共5页
Telecommunication Engineering
基金
国家自然科学基金资助项目(60272079)
国家自然科学基金重点项目 (60332030)
国家高科技研究发展计划(863计划)重大专项项目(2003AA123310)
