Power allocation for downlink path-based precoding in multiuser FDD massive MIMO systems without CSI feedback
Journal
50th Asilomar Conference on Signals, Systems and Computers
Date Issued
2016
Author(s)
Abstract
In this paper, a downlink path-based precoding method for multiuser FDD massive MIMO systems is studied. Due to the huge feedback overhead of acquiring channel state information at the transmitter (CSI-T), FDD massive MIMO was usually considered impractical. In order to enhance the feasibility of such systems, a recent work proposed a precoding method without requiring CSI feedback by taking advantage of FDD reciprocity. Here, a power allocation scheme aimed at minimizing symbol error rate (SER) of each user is proposed for improving this method. Simulation results confirm that the proposed scheme improves the SER performance.
Type
conference paper