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Interference management strategies for multiuser multicell MIMO VLC systems

Title	Interference management strategies for multiuser multicell MIMO VLC systems
Author	Naser, S., Bariah, L., Muhaidat, S., Al-Qutayri, M., Uysal, Murat, Sofotasios, P. C.
Publication Date:	2022-09
Publication Place	- IEEE
Subject	Cooperation strategies, Coordinated beamforming, Multiple-input multiple-output (MIMO), Rate-splitting multiple access (RSMA), Space-division multiple access (SDMA), Visible light communications (VLC)
Type	Periodical
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	0090-6778
Record ID	9d95b350-51c7-46d1-9a58-adb8cff9440a
Library Location	Electrical & Electronics Engineering
Date	2022-09
Sample Text	This paper investigates different precoding strategies for rate splitting multiple access (RSMA) in the downlink of multi-cell visible light communication (VLC) networks. Since classical Shannon capacity formula does not hold for VLC, we first provide a lower bound on the channel capacity for RSMA in such interfering networks. Then, we formulate a spectral efficiency maximization problem to jointly find the optimal rate-splitting and transmit precoding. Beside that, since cell-edge users suffer from additional inter-cell interference, we propose to design the precoders of different RSMA signals utilizing coordinated beamforming (CB). Subsequently, aiming to improve the performance of the CB design for RSMA, while maintain a reduced complexity, we introduce two enhanced precoding strategies for RSMA. To the best of the authors' knowledge such a contribution has not been considered before in the open literature. It is shown in the paper that the formulated optimization problem is non-convex and a sub-optimal, yet, a low complexity solution can be obtained efficiently using semi-definite relaxation combined with successive convex approximation. Through analytical results, we illustrate the flexibility and superiority of the proposed precoding strategies for RSMA over conventional coordinated space division multiple access and non-orthogonal multiple access for different scenarios and network loads.
DOI	10.1109/TCOMM.2022.3190349
Cilt	70

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Özyeğin University

Interference management strategies for multiuser multicell MIMO VLC systems

Author Naser, S., Bariah, L., Muhaidat, S., Al-Qutayri, M., Uysal, Murat, Sofotasios, P. C.

Publication Date 2022-09

Publication Place - IEEE

Subject Cooperation strategies, Coordinated beamforming, Multiple-input multiple-output (MIMO), Rate-splitting multiple access (RSMA), Space-division multiple access (SDMA), Visible light communications (VLC)

Type Periodical

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 0090-6778

Record ID 9d95b350-51c7-46d1-9a58-adb8cff9440a

Library Location Electrical & Electronics Engineering

Date 2022-09

Sample Text This paper investigates different precoding strategies for rate splitting multiple access (RSMA) in the downlink of multi-cell visible light communication (VLC) networks. Since classical Shannon capacity formula does not hold for VLC, we first provide a lower bound on the channel capacity for RSMA in such interfering networks. Then, we formulate a spectral efficiency maximization problem to jointly find the optimal rate-splitting and transmit precoding. Beside that, since cell-edge users suffer from additional inter-cell interference, we propose to design the precoders of different RSMA signals utilizing coordinated beamforming (CB). Subsequently, aiming to improve the performance of the CB design for RSMA, while maintain a reduced complexity, we introduce two enhanced precoding strategies for RSMA. To the best of the authors' knowledge such a contribution has not been considered before in the open literature. It is shown in the paper that the formulated optimization problem is non-convex and a sub-optimal, yet, a low complexity solution can be obtained efficiently using semi-definite relaxation combined with successive convex approximation. Through analytical results, we illustrate the flexibility and superiority of the proposed precoding strategies for RSMA over conventional coordinated space division multiple access and non-orthogonal multiple access for different scenarios and network loads.

DOI 10.1109/TCOMM.2022.3190349

Cilt 70