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


Jianhua Mo, and Robert W. Heath, Jr.


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


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.