I. Introduction
Recent research in wireless communications has investigated the use of a massive number of antennas at the base station (BS) to increase the network capacity and data rates [2]. The benefits of massive multiple input multiple output (MIMO) communications are now very well understood. However, they come at the expense of high power consumption and hardware cost, which needs to be addressed to make massive MIMO commercially viable. One potential solution is to employ low-resolution analog-to-digital converters (ADCs) in the receivers [3]–[5]. The power consumption of an ADC increases exponentially with its bit-width. Hence, in massive MIMO systems with one RF chain per antenna, employing low-resolution ADCs can result in dramatic power savings [6], [7]. Low resolution ADCs also relax the stringent linearity range requirements on the RF circuitry, reducing the hardware cost [8]. However, they bring new challenges receiver design, the large quantization noise introduced by them needs to be countered. This paper develops novel receiver architectures in the context of multiuser massive MIMO orthogonal frequency division multiplexing (OFDM) communications.