STBC块传输系统中的一种新型分集合并算法  

A Novel Diversity Algorithm in STBC Block Transmission System

作　　者：王杰令[1] 刘祖军[1] 田红心[1] 杨宏[1,2] 易克初[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,西安710071 [2]中国空间技术研究院,北京100094

出　　处：《电子与信息学报》2010年第8期2010-2014,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60572148);国家科技重大专项基金(2009ZX03003-001);高等学校学科创新引智计划(B08038)资助课题

摘　　要：该文在二发一收的空时分组码(STBC)单载波块传输系统中,提出一种空时和多径分集合并接收算法。通过基于STBC的单载波频域均衡(STBC-SC-FDE)算法得到对发送信号的估计,以此和信道状态信息(CSI)分离接收信号中的各多径分量,对各多径分量分别采用STBC合并,最后再将各多径分量的合并输出结果按照最大比(MRC)的方式进行合并,从而实现空时二维RAKE接收。该算法在较低的计算复杂度情况下,可以同时获得发射分集和多径分集,Monte Carlo仿真验证了该算法的性能。A space-time and multi-path diversity combining algorithm is presented in STBC block transmission system with two transmit antennas and one receive antenna.The primary detection is carried out by STBC-based Single Carrier Frequency Domain Equalizer （STBC-SC-FDE）,then the multi-path components in the received signal are separated by the initial solution and channel state information.After all the multi-path components are processed by the STBC combining algorithm,the output branches are combined together using Maximal Ratio Combining （MRC） algorithm in the space-time two dimensional RAKE receiver.The new scheme can achieve transmit and multi-path diversity under low computational complexity,and the performance is evaluated by Monte Carlo simulations.

关 键 词：无线通信 空时分组码 单载波频域均衡 发射分集 最大比合并 

分 类 号：TN92[电子电信—通信与信息系统]