Delay-Line Precoder based Analog-Digital MIMO Systems with MMSE Equalizer

Abstract

A hybrid analog-digital precoder equalizer system for MIMO communication is presented in this paper. A delay-line based precoder is proposed to achieve low hardware complexity for large-scale antenna array transmitter deployed in fifth generation mobile devices. Besides, the presented precoder equalizer system is free from intersymbol interference even with very short guard interval when channel state information is known a priori. Simulation results shows that the proposed system can achieve low BER with much lower transmitter hardware complexity.