Limited feedback in multi-user MIMO system with low resolution ADCs


Authors:

Jianhua Mo, and Robert W. Heath, Jr.

Reference:

to appear in Proc. of Asilomar Conf. on Signals, Systems, and Computers, Nov. 2016.

Abstract:

We develop limited feedback methods in a system where a multiple-antenna base station sends signals to many multiple-antenna mobile receivers with low-resolution ADCs. If channel state information is not available with high resolution at the transmitter and the precoding is not well designed, the inter-user interference is a big decoding challenge for receivers with low-resolution quantization. In this paper, we present a limited feedback method for multi-user MIMO systems with low resolution ADCs. We evaluate the power and rate loss incurred by limited feedback in both conventional and novel precoding methods.