Transceiver Optimization for mmWave Line-of-Sight MIMO Systems Using Hybrid Arrays

Deng, J; Li, H; Zhang, JA; Huang, X; Cheng, Z

Transceiver Optimization for mmWave Line-of-Sight MIMO Systems Using Hybrid Arrays

Deng, J Li, H Zhang, JA Huang, X

Cheng, Z

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Micromachines, 14, (2), pp. 236

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Field	Value	Language
dc.contributor.author	Deng, J
dc.contributor.author	Li, H
dc.contributor.author	Zhang, JA
dc.contributor.author	Huang, X https://orcid.org/0000-0001-6869-5732
dc.contributor.author	Cheng, Z
dc.date.accessioned	2023-02-21T00:01:58Z
dc.date.available	2023-02-21T00:01:58Z
dc.identifier.citation	Micromachines, 14, (2), pp. 236
dc.identifier.issn	2072-666X
dc.identifier.issn	2072-666X
dc.identifier.uri	http://hdl.handle.net/10453/166275
dc.description.abstract	<jats:p>The performance of millimeter wave (mmWave) line-of-sight multiple input multiple output (LOS MIMO) systems using hybrid arrays of planar subarrays was studied. We characterized the achievable maximum spatial multiplexing gain for such LOS MIMO systems by the measures of spectral efficiency and effective degree of freedom (EDoF). By proposing a joint plane-wave and spherical-wave-based general 3D channel model, we derived the optimal design parameters in the analog domain, i.e., the optimal subarray separation products, and analyzed their sensitivity on the system performance. We also gave analytical eigenvalue expressions of the equivalent LOS MIMO channel matrix, which are applicable to the case of a non-optimal design, as well as the upper and lower bounds of the EDoF for system performance evaluation. A piecewise uniform quantization codebook was further designed for quantizing phase shifter values in practical applications. The numerical and simulation results show that planar subarrays are superior to traditional arrays in terms of spectral efficiency and EDoF in Ricean fading channels because they are more robust to the change in the communication distance and the deviation from the optimal design. The use of hybrid arrays of planar subarrays effectively removes the limitation of mmWave LOS MIMO systems using traditional arrays, through which, the conventional Rayleigh distance criterion has to be satisfied to achieve the optimal performance.</jats:p>
dc.language	en
dc.publisher	MDPI
dc.relation.ispartof	Micromachines
dc.relation.isbasedon	10.3390/mi14020236
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	1007 Nanotechnology
dc.title	Transceiver Optimization for mmWave Line-of-Sight MIMO Systems Using Hybrid Arrays
dc.type	Journal Article
utslib.citation.volume	14
utslib.for	1007 Nanotechnology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2023-02-21T00:01:56Z
pubs.issue	2
pubs.publication-status	Published online
pubs.volume	14
utslib.citation.issue	2

Abstract:

The performance of millimeter wave (mmWave) line-of-sight multiple input multiple output (LOS MIMO) systems using hybrid arrays of planar subarrays was studied. We characterized the achievable maximum spatial multiplexing gain for such LOS MIMO systems by the measures of spectral efficiency and effective degree of freedom (EDoF). By proposing a joint plane-wave and spherical-wave-based general 3D channel model, we derived the optimal design parameters in the analog domain, i.e., the optimal subarray separation products, and analyzed their sensitivity on the system performance. We also gave analytical eigenvalue expressions of the equivalent LOS MIMO channel matrix, which are applicable to the case of a non-optimal design, as well as the upper and lower bounds of the EDoF for system performance evaluation. A piecewise uniform quantization codebook was further designed for quantizing phase shifter values in practical applications. The numerical and simulation results show that planar subarrays are superior to traditional arrays in terms of spectral efficiency and EDoF in Ricean fading channels because they are more robust to the change in the communication distance and the deviation from the optimal design. The use of hybrid arrays of planar subarrays effectively removes the limitation of mmWave LOS MIMO systems using traditional arrays, through which, the conventional Rayleigh distance criterion has to be satisfied to achieve the optimal performance.

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http://hdl.handle.net/10453/166275