摘要
提出了一种在多用户情况下多输入多输出系统用开关算法结合波束成形技术的方法。对3种波束成形技术的方案研究表明,波束成形的处理过程对开关算法的判决准则有重要影响。从仿真结果可以看到,空时分组码的自适应波束成形算法与开关算法结合时在误码率为10-2时,信噪比比迫零算法结合和奇异值分解算法结合时分别提高7 dB和8 dB左右。
This paper studies on switching algorithm performance when it is combined with several beamforming techniques in a multi-user MIMO communication system. The study of three beamforming solutions shows that the beamforming processing has an important influence on the decision criterion of the switching algorithm. Simulation results demonstrate that when space-time block codes （STBC） with adaptive beamforming algorithm are combined switching algorithm at the BER = 10^-2, the SNR is increased by about 7dB and 8dB respectively in comparison with the combination of zero forcing （ZF） algorithm and singular value decomposition algorithm （SVD）.
出处
《电讯技术》
北大核心
2011年第7期103-107,共5页
Telecommunication Engineering
关键词
多输入多输出系统
波束成形
开关算法
空时分组码
迫零算法
奇异值分解
MIMO system
beamforming
swithching algorithm
space time-block coding
zero-forcing algorithm
singular value decomposition
