分组空时块编码结构及其信号检测算法  

A Group-Wise Space-time Block Coded MIMO Wireless Transmission System and its Signal Detection Algorithm

作　　者：周杰[1] 管云峰[1] 徐友云[1] 罗汉文[1] 葛建华[1] 

机构地区：[1]上海交通大学无线通信研究所,上海200030

出　　处：《电讯技术》2005年第2期48-52,共5页Telecommunication Engineering

基　　金：国家 863计划项目(2003AA123310);国家自然科学基金资助项目(60332030;60272079)

摘　　要：本文提出一种可用于宽带数字移动通信系统的多输入多输出(MIMO)无线传输系统架构———分组的空时块编码(G-STBC)MIMO结构,即发送天线被分成若干组,组内的多根天线进行STBC编码,而各组发送的数据流相互独立。针对这一系统架构,提出了基于迫零检测的最优排序串行干扰消除(OZFSIC)接收信号检测算法的实现方案。计算机仿真结果表明,这种空时编码MIMO结构在等数据率的情况下能获得比相应的V-BLAST系统更优的性能。G-STBC-MIMO结构可以使发送天线多于接收天线,因此,对于无线通信系统下行链路以及大数据量广播业务系统(如数字高清晰度电视地面传输系统)都较V-BLAST更具有优势。This paper presents an efficient multiple-input-multiple-output (MIMO) wireless transmission system architecture, named 'Group-wise Space-time Block Coded (G-STBC)' MIMO system, which may be suitable for broadband mobile communications. In such systems, transmit antennas are partitioned into several groups and each group transmits independent data stream which is individually STBC encoded. As its receiving signal detecting solution,an Optimal Zero Forcing Successive Interference Cancellation (OZF SIC) scheme is proposed. Simulation results show that this space-time architecture as well as its detection method outperforms corresponding V-BLAST greatly with the same transmission rate. G-STBC makes it possible that transmit antennas are more than that of receiver, which is a great advantage over V-BLAST especially in downlink wireless systems and some broadcasting systems like ADTB-T (Advanced Digital Television Broadcasting-Terrestrial).

关 键 词：分组空时块编码 多输入多输出 串行干扰抵消 迫零检测 算法 

分 类 号：TN911.23[电子电信—通信与信息系统]