准正交空时分组码的设计与性能分析  

Design and Performance Analysis of Quasi-orthogonal Space-time Block Codes

作　　者：刁帅[1] 王立莹 

机构地区：[1]武汉船舶职业技术学院教务处,湖北武汉430050 [2]电子科技集团第54研究所,河北石家庄050081

出　　处：《武汉船舶职业技术学院学报》2010年第4期51-55,共5页Journal of Wuhan Institute of Shipbuilding Technology

摘　　要：本文分析了现有的几种准正交空时分组码的结构,在此基础上提出了一种新的四天线准正交分组码编码方案,丰富了四天线准正交空时分组码的可用码字。仿真结果表明,在不增加译码复杂度的情况下,新的编码方案性能接近于TBH码和Jafarkhani码。比较了最大似然译码算法和最小均方误差译码算法,仿真结果表明,最小均方误差译码算法对新的准正交分组码具有较好的检测性能,译码复杂度降低。This paper analyzes the structure of several types of Quasi-orthogonal Space-time Block Codes（QSTBC）,proposes a new methods of QSTBC for four antennas which enriches the family of QSTBC.Experiment results indicate that the new QSTBC has good performance as TBH and Jafarkhani cases,while the decoding complexity is the same as other quasi-orthogonal codes.This paper has compared Maximum Likelihood（ML） decoding algorithm and Minimum Mean Square Error（MMSE） decoding algorithm for new QSTBC.Simulation results indicate that MMSE decoding algorithm has good performance and can reduce the computation complexity.

关 键 词：MIMO系统 全速率 准正交空时分组码 最大似然译码 最小均方误差译码 

分 类 号：TN911.22[电子电信—通信与信息系统]