在发送端对信号进行预处理,不仅可以降低接收端的计算量和实现复杂性,还可以提高系统传输性能,增加系统的容量。本文推导了发送维纳滤波(TxWF),并将这种技术应用于TD-SCDMA多用户MIMO下行链路。通过仿真分析,说明发送维纳滤波的传输性能优于传统的联合发送(JT)技术,在高信噪比的情况下尤为显著,具有良好的应用前景。
With pre-processing of the signal, transmitter can not only greatly reduce the calculation cost and the complexity of mobile station, but also improve performance and capacity of the system. This paper deducts transmit wiener filter (TxWF) and applies it in the multi-user downlink of TD-SCDMA system. The simulation results indicate that transmit wiener filter has an excellent performance as compared with joint transmission (JT), especially in the condition of higher signal-noise-ratio, and will have a bright future.