一种基于准正交空时码的低复杂度MIMO差分检测方法  

A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes

作　　者：孙德福[1] 唐友喜[1] 邵士海[1] 马万治[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都610054

出　　处：《电子学报》2007年第10期1849-1853,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60572090;No.60472045;No.60496313);教育部博士点基金(No.20050614009)

摘　　要：针对可实现全速率传输的准正交空时码,提出了一种低复杂度的准正交MIMO差分检测方法.该方法在发射端对数据比特进行联合星座映射,构造准正交空时码进行差分编码;接收端采用最大似然准则对两组星座符号对(symbol pair)并行差分检测.本文提出的星座集合及联合星座映射方法简化了接收端检测算法,降低了检测计算复杂度.A low computational complexity differential detection scheme for Multiple Input Multiple Output system is proposed which is based on the full rate quasi-orthogonal space-time block codes. The transmitted bits are jointly mapped to construct quasi-orthogonal space-time block codes and the codes are used to perform differential encoding, At the receiver,Maximum Likelihood （ML） criterion is used to differentially decode the symbol pairs. The constelation set and joint constelation mapping defined in this paper simplify the detection algorithm and reduce the detection computational complexity.

关 键 词：多入多出 正交空时分组码 准正交空时分组码 差分检测 

分 类 号：TN914[电子电信—通信与信息系统]