MIMO-OFDM系统信道盲均衡

A Blind Equalizer for MIMO-OFDM Systems

针对多输入多输出正交平分复用系统(MIMO-OFDM),提出矢量简化星座算法(VRCA)进行盲均衡。VRCA有效地对MIMO-OFDM系统进行均衡的同时,能够补偿信道造成的相位旋转。该算法解决了经典恒模算法(VCMA)无法解决的盲均衡相位旋转问题,且算法收敛快速,为MIMO-OFDM系统接收信号的正确判决做好准备。

<Abstrcat> By making use of the vector reduced constellation algorithm (VRCA), the blind equalization of a wireless mobile communication system with multiple input & multiple output and orthogonal frequency division multiplexing (MIMO-OFDM) is studied. The VRCA will minimize the cost function that is constructed by the difference between the equalized signal and the corresponding reduced constellation in four different quadrants. It wipes off the phase rotation off which the vector constant modulus algorithm cannot wipe.