DOA estimation for massive multiple-input multiple-output (MIMO) system can provide ultra-high-resolution angle estimation. However, due to the high computational complexity and cost of all digital MIMO systems, a hybrid analog digital (HAD) structure MIMO was proposed. In this paper, a fast ambiguous phase elimination method is proposed to solve the problem of direction-finding ambiguity caused by the HAD MIMO. Only two-data-blocks are used to realize DOA estimation. Simulation results show that the proposed method can greatly reduce the estimation delay with a slight performance loss.
@article{arxiv.2105.06634,
title = {Fast Ambiguous DOA Elimination Method of DOA Measurement for Hybrid Massive MIMO Receiver},
author = {Nuo Chen and Xinyi Jiang and Baihua Shi and Yin Teng and Jinhui Lu and Feng Shu and Jun Zou and Jun Li and Jiangzhou Wang},
journal= {arXiv preprint arXiv:2105.06634},
year = {2021}
}