一种改进的空时Turbo网格码Log-MAP译码算法  

An improved Log-MAP algorithm for space-time Turbo trellis code

作　　者：李杰海 庞伟正[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《信息技术》2008年第8期102-104,共3页Information Technology

摘　　要：提出应用于多天线系统的空时编码是未来无线移动通信中极具前途的一种技术。文中在详细论述了空时Turbo网格码的基础上,针对Log-MAP译码提出了优化方案。仿真结果表明,新的算法在大大降低译码复杂度的同时较好地保持了译码性能,使其非常接近Log-MAP算法的译码性能,同时也非常有利于硬件实现。Space-time coding applied in MIMO system is a promising technology in the future wireless mobile communications. This paper discusses space-time Turbo trellis code in detail. Upon this, the paper proposes an improved scheme for decoding. Simulation results show that the proposed algorithm has performance very close to the Log-MAP algorithm for Turbo codes decoding and can decrease the decoding complexity greatly at the same time. In addition, realization of the new algorithm by hardware is very easy.

关 键 词：空时TURBO网格码 LOG-MAP算法 空时网格码 迭代译码 

分 类 号：TN911[电子电信—通信与信息系统]