Joint Location and Beamforming Design for STAR-RIS Assisted NOMA Systems
Joint Location and Beamforming Design for STAR-RIS Assisted NOMA Systems
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) communication systems are investigated in its vicinity, where a STAR-RIS is deployed within a predefined region for establishing communication links for users. Both beamformer-based NOMA and cluster-based NOMA schemes are employed at the multi-antenna base station (BS). For each scheme, the STAR-RIS deployment location, the passive transmitting and reflecting beamforming (BF) of the STAR-RIS, and the active BF at the BS are jointly optimized for maximizing the weighted sum-rate (WSR) of users. To solve the resultant non-convex problems, an alternating optimization (AO) algorithm is proposed, where successive convex approximation (SCA) and semi-definite programming (SDP) methods are invoked for iteratively addressing the non-convexity of each sub-problem. Numerical results reveal that 1) the WSR performance can
be significantly enhanced by optimizing the specific deployment location of the STAR-RIS; 2) both beamformer-based and clusterbased NOMA prefer asymmetric STAR-RIS deployment.
Array signal processing, Beamforming design, Channel estimation, Decoding, Downlink, NOMA, Optimization, STAR-RIS, Uplink, deployment design, multi-antenna NOMA
2532-2546
Gao, Qiling
5a503be4-d1e3-44e9-a505-fce1a36a465e
Liu, Yuanwei
2767c2bc-6199-4106-ac28-81c3dadcfa29
Mu, Xidong
5d2b808c-707e-4ef3-bc2d-cc9022b13f33
Jia, Min
56c9a840-c60c-43a0-a600-ef0b2daf5a7b
Li, Dongbo
5d79324b-4513-4587-84e5-024fe4847de3
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
1 April 2023
Gao, Qiling
5a503be4-d1e3-44e9-a505-fce1a36a465e
Liu, Yuanwei
2767c2bc-6199-4106-ac28-81c3dadcfa29
Mu, Xidong
5d2b808c-707e-4ef3-bc2d-cc9022b13f33
Jia, Min
56c9a840-c60c-43a0-a600-ef0b2daf5a7b
Li, Dongbo
5d79324b-4513-4587-84e5-024fe4847de3
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Gao, Qiling, Liu, Yuanwei, Mu, Xidong, Jia, Min, Li, Dongbo and Hanzo, Lajos
(2023)
Joint Location and Beamforming Design for STAR-RIS Assisted NOMA Systems.
IEEE Transactions on Communications, 71 (4), .
(doi:10.1109/TCOMM.2023.3247753).
Abstract
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) communication systems are investigated in its vicinity, where a STAR-RIS is deployed within a predefined region for establishing communication links for users. Both beamformer-based NOMA and cluster-based NOMA schemes are employed at the multi-antenna base station (BS). For each scheme, the STAR-RIS deployment location, the passive transmitting and reflecting beamforming (BF) of the STAR-RIS, and the active BF at the BS are jointly optimized for maximizing the weighted sum-rate (WSR) of users. To solve the resultant non-convex problems, an alternating optimization (AO) algorithm is proposed, where successive convex approximation (SCA) and semi-definite programming (SDP) methods are invoked for iteratively addressing the non-convexity of each sub-problem. Numerical results reveal that 1) the WSR performance can
be significantly enhanced by optimizing the specific deployment location of the STAR-RIS; 2) both beamformer-based and clusterbased NOMA prefer asymmetric STAR-RIS deployment.
Text
Joint_Location_and_Beamforming_Design_for_STAR-RIS_Assisted_NOMA_Systems
- Accepted Manuscript
More information
Accepted/In Press date: 13 February 2023
e-pub ahead of print date: 23 February 2023
Published date: 1 April 2023
Additional Information:
L. Hanzo would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council projects EP/P034284/1 and EP/P003990/1 (COALESCE) as well as of the European Research Council's Advanced Fellow Grant QuantCom (Grant No. 789028)
Publisher Copyright:
© 1972-2012 IEEE.
Keywords:
Array signal processing, Beamforming design, Channel estimation, Decoding, Downlink, NOMA, Optimization, STAR-RIS, Uplink, deployment design, multi-antenna NOMA
Identifiers
Local EPrints ID: 475415
URI: http://eprints.soton.ac.uk/id/eprint/475415
ISSN: 0090-6778
PURE UUID: 212069d8-b754-4499-a61d-18f3aeb4bc2a
Catalogue record
Date deposited: 17 Mar 2023 17:36
Last modified: 18 Mar 2024 02:36
Export record
Altmetrics
Contributors
Author:
Qiling Gao
Author:
Yuanwei Liu
Author:
Xidong Mu
Author:
Min Jia
Author:
Dongbo Li
Author:
Lajos Hanzo
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics