两天线差分空时分组码研究  

On differential space-time block code with two transmit antennas

作　　者：姚琼[1] 邵朝[1] 

机构地区：[1]西安邮电学院通信与信息工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2011年第6期5-8,共4页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：陕西省科技厅计划基金资助项目(2010JQ8030)

摘　　要：从差分码的编译着手,导出两天线差分空时分组码译码的差分系数矢量估计值关系式,据此可知,两天线差分空时分组码的译码过程不需要信道状态信息。通过仿真进行比较研究,结果显示,差分空时分组码的译码性能比普通空时分组码的译码性能虽相差大约3dB,但在快衰落信道状态下仍可保持较好性能。Based on the process of the differential code encoding/decoding,for decoding of differential space-time code（DSTBC） with two transmit antennas,a estimated differential coefficient vector relationship is derived out.According to this relationship,the decoding of the differential space-time block codes has no use for channel state information（CSI）.Simulation results show that,the differential space-time block code maintains good decoding performance in fast fading environment,although,it＇s inferior to the space time block code in decoding performance about 3dB.

关 键 词：差分空时分组码 最大似然解码 正交设计 信道状态信息 

分 类 号：TN911.22[电子电信—通信与信息系统]