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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 ultrareliable 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, the problem of maximizing the geometric mean (GM) of these rates (GM-rate) and show that this aforementioned results are providing 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, using its execution. The 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
1-6
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, 1-6. (doi:10.1109/TVT.2022.3193443).

Record type: Article

Abstract

This paper considers the downlink of an ultrareliable 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, the problem of maximizing the geometric mean (GM) of these rates (GM-rate) and show that this aforementioned results are providing 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, using its execution. The 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
Additional Information: Publisher Copyright: 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: 23 Sep 2022 01:32

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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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