TDD MISO系统中波束成形的性能分析

Performance Analysis on Beamforming in TDD MISO Systems

文中首先指出在时分双工多输入单输出系统中,发送机和接收机的信道状态信息存在时延,而该时延会影响波束成形的性能增益。随后,通过推导接收机误比特率的闭合表达式,说明时延会损害接收机的性能。最后,用数值仿真验证了所做的性能分析的正确性。

This paper first points out that in a TDD （Time Division Duplex） MISO （Multiple-Input Single-Output） system exists a delay between the transmitter＇ s and receiver＇ s CSI （Channel State Information）, and this delay would have impacts on the performance gain of BF （Beamforming）. Then, the closed-form expression of BER （Bit Error Rate） is derived to show that the delay would degrade the performance at the receiver. Finally, the paper describes the numerical simulations for verifying the performance analysis.