X信道中新的空时码传输方案  

New Space-Time Coded Transmission Scheme for X Channel

作　　者：田心记[1] 李亚[1] 

机构地区：[1]河南理工大学计算机科学与技术学院,河南焦作454000

出　　处：《北京邮电大学学报》2014年第1期99-102,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61300124;61202286;51174263);河南省自然科学基金项目(132300410461)

摘　　要：对于每个用户均配置两根天线的X信道,提出了一种新的空时码传输方案.每个用户采用速率为2的空时分组码(R2-STBC),通过合理地设计R2-STBC的发送方式和预编码,使接收端对接收信号进行线性处理后消除了多用户干扰.与相同场景中已有的空时码传输方案相比,所提方案不但节省了反馈量,还提高了传输效率.仿真结果显示,所提方案的可靠性显著优于相同场景中的已有方案.A new space-time coded transmission scheme is proposed for X channel with two antennas at each user. Each user employs rate-2 space-time block code （R2-STBC）. The multi-user interference is eliminated by proper design of transmission method of R2-STBC and pre-coding at the transmitter. The feedback amount is reduced and the transmission efficiency is higher as well, compared with the existing scheme for the same scene. Simulation results demonstrate that the reliability of the proposed scheme sig- nificantly outperforms the existing scheme.

关 键 词：X信道 空时分组码 预编码 多用户干扰 反馈量 传输效率 

分 类 号：TN929.53[电子电信—通信与信息系统]