改进的多用户波束赋形算法  

Improved beamforming algorithm of multi-user system

作　　者：李文刚[1] 易克初[1] 刘祖军[1] 邵飞[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,陕西西安710071

出　　处：《通信学报》2009年第12期79-84,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(60572148;60702060);国家科技重大专项资助项目(2009ZX03003-001)~~

摘　　要：为了减少多用户MIMO系统中用户间的相互干扰,增加系统的吞吐量,提出一种基于用户发送信号最小泄露准则(SLNR)的多用户线性波束赋形算法——CB-SLNR算法,该算法通过确定收发双方码本矩阵,基站选择合适的codebook对发送信号赋形,同时通过控制信息传递其他用户码本索引信息,使接收端易于采用MMSE检测算法恢复发送信号。仿真表明CB-SLNR算法很好地改善了系统吞吐量。To reduce the user＇s interference and improve the throughput of multi-user MIMO system, a multi-user beamfoming algorithm named as CB-SLNR, which based on the minimal leakage of transmits signal criterion, was proposed. First the transmitter and receivers co-fixed a codebook matrix, then base station select available codebook vector to beamfrom the transmitted signal, while it＇s codebook index was transmitted to the user via a low-rate feedforward control channel. It was used to recover the transmitted signal with the MMSE detection algorithm. Simulation shows the CB-SLNR algorithm has a significant improvement in system＇s throughput.

关 键 词：多用户 多入多出 线性波束赋形 同道干扰 吞吐量 

分 类 号：TN914[电子电信—通信与信息系统]