首页|Rapid Phase Ambiguity Elimination Methods for DOA Estimator via Hybrid Massive MIMO Receive Array

Rapid Phase Ambiguity Elimination Methods for DOA Estimator via Hybrid Massive MIMO Receive Array

扫码查看
原文链接
  • 万方数据
For a sub-connected hybrid multiple-input multiple-output(MIMO)receiver with K subarrays and N antennas,there exists a challenging problem of how to rapidly remove phase ambiguity in only single time-slot.A di-rection of arrival(DOA)estimator of maximizing received power(Max-RP)is proposed to find the maximum value of K-subarray output powers,where each subarray is in charge of one sector,and the center angle of the sector corre-sponding to the maximum output is the estimated true DOA.To make an enhancement on precision,Max-RP plus quadratic interpolation(Max-RP-QI)method is designed.In the proposed Max-RP-QI,a quadratic interpolation scheme is adopted to interpolate the three DOA values corresponding to the largest three receive powers of Max-RP.To achieve the Cramer Rao lower bound,a Root-MUSIC plus Max-RP-QI scheme is developed.Simulation results show that the proposed three methods eliminate the phase ambiguity during one time-slot and also show low compu-tational complexities.The proposed Root-MUSIC plus Max-RP-QI scheme can reach the Cramer Rao lower bound,and the proposed Max-RP and Max-RP-QI are still some performance losses 2-4 dB compared to the Cramer Rao lower bound.

Hybrid analog and digitalDirection of arrivalMassive hybrid multiple-input multiple-outputPhase ambiguityLow computational complexity

Xichao ZHAN、Zhongwen SUN、Feng SHU、Yiwen CHEN、Xin CHENG、Yuanyuan WU、Qi ZHANG、Yifan LI、Peng ZHANG

展开 >

School of Information and Communication Engineering,Hainan University,Haikou 570228,China

School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHainan Province Science and Technology Special FundScientific Research Fund Project of Hainan University

U22A200262071234ZDKJ2021022KYQDZR-21008

2024

10.23919/cje.2022.00.112

电子学报(英文)

电子学报(英文)

CSTPCDEI
ISSN：1022-4653
年,卷(期)：2024.33(1)
  • 31