Improved Pilot Designs for Enhancing Connectivity in Multicarrier Massive MIMO Systems

Nguyen, TK; Nguyen, HH; Tuan, HD; Ngo, HQ

Improved Pilot Designs for Enhancing Connectivity in Multicarrier Massive MIMO Systems

Nguyen, TK Nguyen, HH Tuan, HD Ngo, HQ

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Wireless Communications Letters, 2022, 11, (5), pp. 1057-1061
Issue Date:: 2022-05-01

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Field	Value	Language
dc.contributor.author	Nguyen, TK
dc.contributor.author	Nguyen, HH
dc.contributor.author	Tuan, HD
dc.contributor.author	Ngo, HQ
dc.date.accessioned	2023-04-06T05:06:25Z
dc.date.available	2023-04-06T05:06:25Z
dc.date.issued	2022-05-01
dc.identifier.citation	IEEE Wireless Communications Letters, 2022, 11, (5), pp. 1057-1061
dc.identifier.issn	2162-2337
dc.identifier.issn	2162-2345
dc.identifier.uri	http://hdl.handle.net/10453/169337
dc.description.abstract	This letter proposes improved pilot designs to enhance the connectivity of multicarrier massive MIMO systems. Exploiting the fact that orthogonal frequency-division multiplexing (OFDM) training symbols end with zero samples, the proposed pilot designs reduce pilot overhead by truncating the zero samples and/or intentionally using them for a guard interval without affecting the channel estimation quality. The proposed designs allow a massive MIMO system either to serve more users with a fixed amount of training time, or requires less training time for a fixed number of users. Numerical results obtained for a cell-free massive MIMO system (as an application use case) demonstrate significant improvements in connectivity and spectral efficiency by the proposed designs over the conventional designs.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Wireless Communications Letters
dc.relation.isbasedon	10.1109/LWC.2022.3155610
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0805 Distributed Computing, 0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.title	Improved Pilot Designs for Enhancing Connectivity in Multicarrier Massive MIMO Systems
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0805 Distributed Computing
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
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/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-06T05:06:24Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	5

Abstract:

This letter proposes improved pilot designs to enhance the connectivity of multicarrier massive MIMO systems. Exploiting the fact that orthogonal frequency-division multiplexing (OFDM) training symbols end with zero samples, the proposed pilot designs reduce pilot overhead by truncating the zero samples and/or intentionally using them for a guard interval without affecting the channel estimation quality. The proposed designs allow a massive MIMO system either to serve more users with a fixed amount of training time, or requires less training time for a fixed number of users. Numerical results obtained for a cell-free massive MIMO system (as an application use case) demonstrate significant improvements in connectivity and spectral efficiency by the proposed designs over the conventional designs.

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http://hdl.handle.net/10453/169337