空间相关MIMO信道中一种自适应的天线选择算法

An Adaptive Antenna Selection Scheme for Spatial Correlated MIMO Channel

该文研究了空间相关性对于多输入多输出空间复用(MIMO-SM)系统性能影响问题,并提出了一种适用于 迭代迫零软干扰抵消接收机的天线选择算法。平坦衰落信道中,发送天线相关性将降低接收天线选择算法的性能, 该文所研究的算法采用可变的接收天线数以获得不同的接收分集,增加一定的硬件实现复杂度但可以显著减小发送 天线相关性引起的误码性能下降。在2个发送天线,4个接收天线的天线配置场合,计算机仿真证实该算法在帧误 码率上优于简单的行相关算法(CBM)。

In this paper, the impact of spatial fading correlation on Multiple-Input Multiple-Output Spatial Multiplexing （MIMO-SM） systems is investigated, where antenna selection and soft canceller with iterative decoding is considered. It turns out that the number of receive antennas to be selected at the receiver plays an important part when dealing with high antennas correlation in fiat fading channel. To mitigate the effects of highly spatial correlation at the transmitter while hardware costs and computational burden are tolerable, the variable receive antennas is selected to obtain different receiver diversity. It will be shown via simulation that in some cases this adaptive antenna selection scheme with two transmit antennas and four receive antennas offers better frame error rate performance than the simple row Correlation-Based Method （CBM）.