A Greedy Approach for Multiuser mmWave Hybrid Precoding with Subarray Architectures

Abstract

We consider a multiuser mmWave downlink with hybrid digital-analog transceivers, where the analog stage is realized with a network of phase shifters. Moreover, we concentrate on a case particularly relevant from the practical perspective. Namely, we constrain the analog stages such that disjoint antenna subarrays are processed separately in the analog domain. In this abstract, we provide initial results which extend the promising results from [1] to a multiuser scenario. Like in the referenced work, we separate the design of the digital and analog processing, and concentrate on the latter.