PIC-SIC分组译码的两用户空时编码方案  

Space-Time Coding for Two-User MIMO Systems with the PIC-SIC Group Decoding

作　　者：李国权[1] 吴玉成[1] 吴晋成[1] 田逢春[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《北京邮电大学学报》2012年第3期116-119,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60872038);中央高校基本科研业务费专项项目(CDJZR11160005)

摘　　要：两用户分层Alamouti码编码的多入多出系统采用最大似然译码能获得满分集增益,但复杂度较高,若利用复杂度较低的部分干扰相消(PIC)和串行干扰相消(SIC)辅助的PIC-SIC分组译码则会损失分集增益,为此提出一种编码方案,并证明此方案在接收天线数为N时利用PIC-SIC分组译码能获得满分集增益2N.仿真结果表明,新编码方案相对于分层Alamouti码能获得更优的误码率性能和更高的分集增益.For a two-user layered Alamouti-coded multiple-input muhiple-output （MIM0）system, the complexity of the maximum-likelihood decoding is high while full diversity is achieved. Using low-com- plexity partial interference cancellation （PIC） group decoding and its combination with successive inter- ference cancellation （PIC-SIC） group decoding, one space-time coding scheme is proposed. Full diversi- ty gain is proved to be achieved with the PIC-SIC group decoding by the analytical derivation of the sym- bol error rate. Simulation confirms the derivation and its better bit-error rate performance over layered with the PIC and PIC-SIC group decoding.

关 键 词：分层Alamouti码 部分干扰相消 串行干扰相消 分组译码 多入多出系统 

分 类 号：TN911.7[电子电信—通信与信息系统]