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.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
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)
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
layered Alamouti code
partial interference cancellation
successive interference cancella- tion
group decoding
multiple-input multiple-output systems
