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Fast Ambiguous DOA Elimination Method of DOA Measurement for Hybrid Massive MIMO Receiver (2105.06634v1)
Published 14 May 2021 in cs.IT, eess.SP, and math.IT
Abstract: 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.