Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems

In this paper, we investigate two novel beamspace channel estimation schemes for millimeter-wave MIMO-OFDM systems relying on a uniform linear antenna array. Based on the sparse nature of the beamspace channel, compressive sensing-based methods can be adopted. Most of the existing wideband beamspace...

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Autores principales:	Xiaohao Mo, Wenfeng Ma, Lin Gui, Ling Zhang, Xichao Sang
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	MIMO millimeter-wave compressive sensing beamspace channel estimation beam squint Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/21f789c4f07d474b93727d4f0d2fa703
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id	oai:doaj.org-article:21f789c4f07d474b93727d4f0d2fa703
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spelling	oai:doaj.org-article:21f789c4f07d474b93727d4f0d2fa7032021-11-20T00:02:23ZBeamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems2169-353610.1109/ACCESS.2021.3126392https://doaj.org/article/21f789c4f07d474b93727d4f0d2fa7032021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9606748/https://doaj.org/toc/2169-3536In this paper, we investigate two novel beamspace channel estimation schemes for millimeter-wave MIMO-OFDM systems relying on a uniform linear antenna array. Based on the sparse nature of the beamspace channel, compressive sensing-based methods can be adopted. Most of the existing wideband beamspace channel estimation schemes take the common support assumption that the support of all sub-carriers from a single path component keeps unchanged. However, due to the beam squint effect caused by time delays among different antennas, this assumption is no longer satisfied. Based on the above, we analyze the frequency-dependent sparse structure of the beamspace channel due to beam squint and propose the block simultaneous orthogonal matching pursuit algorithm where support is jointly estimated by using beamspace windows. Moreover, considering the power focusing effect of beam squint, we propose the two-stage beamspace channel estimation scheme, where the first stage is for the angle of arrival estimation, and the second stage is for updating path gain to reconstruct the beamspace channel. Simulation results demonstrate that proposed schemes can estimate the channel under the beam squint effect with high accuracy but low pilot overheads.Xiaohao MoWenfeng MaLin GuiLing ZhangXichao SangIEEEarticleMIMOmillimeter-wavecompressive sensingbeamspace channel estimationbeam squintElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 153037-153049 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	MIMO millimeter-wave compressive sensing beamspace channel estimation beam squint Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	MIMO millimeter-wave compressive sensing beamspace channel estimation beam squint Electrical engineering. Electronics. Nuclear engineering TK1-9971 Xiaohao Mo Wenfeng Ma Lin Gui Ling Zhang Xichao Sang Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
description	In this paper, we investigate two novel beamspace channel estimation schemes for millimeter-wave MIMO-OFDM systems relying on a uniform linear antenna array. Based on the sparse nature of the beamspace channel, compressive sensing-based methods can be adopted. Most of the existing wideband beamspace channel estimation schemes take the common support assumption that the support of all sub-carriers from a single path component keeps unchanged. However, due to the beam squint effect caused by time delays among different antennas, this assumption is no longer satisfied. Based on the above, we analyze the frequency-dependent sparse structure of the beamspace channel due to beam squint and propose the block simultaneous orthogonal matching pursuit algorithm where support is jointly estimated by using beamspace windows. Moreover, considering the power focusing effect of beam squint, we propose the two-stage beamspace channel estimation scheme, where the first stage is for the angle of arrival estimation, and the second stage is for updating path gain to reconstruct the beamspace channel. Simulation results demonstrate that proposed schemes can estimate the channel under the beam squint effect with high accuracy but low pilot overheads.
format	article
author	Xiaohao Mo Wenfeng Ma Lin Gui Ling Zhang Xichao Sang
author_facet	Xiaohao Mo Wenfeng Ma Lin Gui Ling Zhang Xichao Sang
author_sort	Xiaohao Mo
title	Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
title_short	Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
title_full	Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
title_fullStr	Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
title_full_unstemmed	Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems
title_sort	beamspace channel estimation with beam squint effect for the millimeter-wave mimo-ofdm systems
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/21f789c4f07d474b93727d4f0d2fa703
work_keys_str_mv	AT xiaohaomo beamspacechannelestimationwithbeamsquinteffectforthemillimeterwavemimoofdmsystems AT wenfengma beamspacechannelestimationwithbeamsquinteffectforthemillimeterwavemimoofdmsystems AT lingui beamspacechannelestimationwithbeamsquinteffectforthemillimeterwavemimoofdmsystems AT lingzhang beamspacechannelestimationwithbeamsquinteffectforthemillimeterwavemimoofdmsystems AT xichaosang beamspacechannelestimationwithbeamsquinteffectforthemillimeterwavemimoofdmsystems
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Beamspace Channel Estimation With Beam Squint Effect for the Millimeter-Wave MIMO-OFDM Systems

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