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Finite-blocklength RIS-aided transmit beamforming

Finite-blocklength RIS-aided transmit beamforming
Finite-blocklength RIS-aided transmit beamforming

This paper considers the downlink of an ultra-reliable low-latency communication (URLLC) system in which a base station (BS) serves multiple single-antenna users in the short (finite) blocklength (FBL) regime with the assistance of a reconfigurable intelligent surface (RIS). In the FBL regime, the users' achievable rates are complex functions of the beamforming vectors and of the RIS's programmable reflecting elements (PREs). We propose the joint design of the transmit beamformers and PREs to maximize the geometric mean (GM) of these rates (GM-rate) and show that this approach provides fair rate distribution and thus reliable links to all users. A novel computational algorithm is developed, which is based on closed forms to generate improved feasible points. Simulations show the merit of our solution.

Array signal processing, Error probability, Optimization, Quality of service, Reconfigurable intelligent surface, Signal to noise ratio, Symmetric matrices, Ultra reliable low latency communication, geometric mean maximization, nonconvex optimization algorithms, short (finite) blocklength communication, transmit beamforming, trigonometric function optimization
0018-9545
12374-12379
Abughalwa, M.
341bd084-bf4f-409c-8897-0bea78873e10
Tuan, H.D.
aa8d1a67-3f2a-41bd-b2cf-3da0aed12b91
Nguyen, D.N.
d892a814-7262-4e6d-b8c4-be59246c62f3
Poor, H.V.
dc211467-586c-444e-849d-b8f73c6b632d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Abughalwa, M.
341bd084-bf4f-409c-8897-0bea78873e10
Tuan, H.D.
aa8d1a67-3f2a-41bd-b2cf-3da0aed12b91
Nguyen, D.N.
d892a814-7262-4e6d-b8c4-be59246c62f3
Poor, H.V.
dc211467-586c-444e-849d-b8f73c6b632d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Abughalwa, M., Tuan, H.D., Nguyen, D.N., Poor, H.V. and Hanzo, Lajos (2022) Finite-blocklength RIS-aided transmit beamforming. IEEE Transactions on Vehicular Technology, 71 (11), 12374-12379. (doi:10.1109/TVT.2022.3193443).

Record type: Article

Abstract

This paper considers the downlink of an ultra-reliable low-latency communication (URLLC) system in which a base station (BS) serves multiple single-antenna users in the short (finite) blocklength (FBL) regime with the assistance of a reconfigurable intelligent surface (RIS). In the FBL regime, the users' achievable rates are complex functions of the beamforming vectors and of the RIS's programmable reflecting elements (PREs). We propose the joint design of the transmit beamformers and PREs to maximize the geometric mean (GM) of these rates (GM-rate) and show that this approach provides fair rate distribution and thus reliable links to all users. A novel computational algorithm is developed, which is based on closed forms to generate improved feasible points. Simulations show the merit of our solution.

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2207.11444 - Accepted Manuscript
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Finite_Blocklength_RIS_Aided_Transmit_Beamforming - Version of Record
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More information

Accepted/In Press date: 18 July 2022
e-pub ahead of print date: 25 July 2022
Published date: 1 November 2022
Additional Information: Funding Information: The work of Monir Abughalwa was supported by an Australian Government Research Training Program Scholarship. The work of Hoang D. Tuan was supported by theAustralian Research Council 's Discovery Projects underGrant DP190102501. Thework ofH.Vincent Poorwas supported by the U.S. National Science Foundation under Grant CNS-2128448. The work of Lajos Hanzo was supported in part by the Engineering and Physical Sciences Research Council projects under Grants EP/P034284/1 and EP/P003990/1 (COALESCE), and in part by the European Research Council 's Advanced Fellow Grant QuantCom under Grant 789028. Publisher Copyright: © 1967-2012 IEEE.
Keywords: Array signal processing, Error probability, Optimization, Quality of service, Reconfigurable intelligent surface, Signal to noise ratio, Symmetric matrices, Ultra reliable low latency communication, geometric mean maximization, nonconvex optimization algorithms, short (finite) blocklength communication, transmit beamforming, trigonometric function optimization

Identifiers

Local EPrints ID: 468585
URI: http://eprints.soton.ac.uk/id/eprint/468585
ISSN: 0018-9545
PURE UUID: e1e15819-9333-432c-8fa3-0206d8ba3415
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 18 Aug 2022 16:41
Last modified: 18 Mar 2024 02:36

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Contributors

Author: M. Abughalwa
Author: H.D. Tuan
Author: D.N. Nguyen
Author: H.V. Poor
Author: Lajos Hanzo ORCID iD

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