Resource Efficient and Robust RSMA for Visible Light Communications
Spectral efficiency (SE) and energy efficiency (EE) are two main metrics for the transmit design in Visible Light Communications (VLC). However, the SE-optimal and EE-optimal strategies may be in conflict with each other to some extent. In this paper, we investigate the the tradeoff between EE and S...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10499828/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850108999798620160 |
|---|---|
| author | Jianfei Hu Chen Sun Jiaheng Wang Xiqi Gao Liang Xia Qixing Wang |
| author_facet | Jianfei Hu Chen Sun Jiaheng Wang Xiqi Gao Liang Xia Qixing Wang |
| author_sort | Jianfei Hu |
| collection | DOAJ |
| description | Spectral efficiency (SE) and energy efficiency (EE) are two main metrics for the transmit design in Visible Light Communications (VLC). However, the SE-optimal and EE-optimal strategies may be in conflict with each other to some extent. In this paper, we investigate the the tradeoff between EE and SE in rate splitting multiple access (RSMA)-aided VLC systems to maximize the system resource efficiency (RE) taking both perfect and imperfect channel state information (CSI) into consideration. For the scenarios with perfect CSI, we explore the joint precoding design and common rate allocation to maximize the RE of RSMA-aided VLC systems under the constraints of quality of service (QoS) and linear operation region (LoR) of LED, and propose a primal-dual-gradient-based precoding strategy. Furthermore, in the presence of CSI estimation errors, we propose a worst-case robust precoding design by exploiting quadratic transform and <inline-formula><tex-math notation="LaTeX">$\mathcal {S}$</tex-math></inline-formula>-Procedure. Numerical results indicate that the proposed resource efficient RSMA algorithm achieves the tradeoff between EE and SE. |
| format | Article |
| id | doaj-art-8cf70e775f6a47878b640fe2146fa0e3 |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-8cf70e775f6a47878b640fe2146fa0e32025-08-20T02:38:13ZengIEEEIEEE Photonics Journal1943-06552024-01-0116411210.1109/JPHOT.2024.338847210499828Resource Efficient and Robust RSMA for Visible Light CommunicationsJianfei Hu0https://orcid.org/0009-0005-5268-2781Chen Sun1https://orcid.org/0000-0002-8352-9094Jiaheng Wang2https://orcid.org/0000-0002-9783-5471Xiqi Gao3https://orcid.org/0000-0001-9107-6593Liang Xia4Qixing Wang5National Mobile Communications Research Laboratory, School of Information Science and Engineering, Southeast University, Nanjing, ChinaNational Mobile Communications Research Laboratory, School of Information Science and Engineering, Southeast University, Nanjing, ChinaNational Mobile Communications Research Laboratory, School of Information Science and Engineering, Southeast University, Nanjing, ChinaNational Mobile Communications Research Laboratory, School of Information Science and Engineering, Southeast University, Nanjing, ChinaChina Mobile Research Institute, Beijing, ChinaChina Mobile Research Institute, Beijing, ChinaSpectral efficiency (SE) and energy efficiency (EE) are two main metrics for the transmit design in Visible Light Communications (VLC). However, the SE-optimal and EE-optimal strategies may be in conflict with each other to some extent. In this paper, we investigate the the tradeoff between EE and SE in rate splitting multiple access (RSMA)-aided VLC systems to maximize the system resource efficiency (RE) taking both perfect and imperfect channel state information (CSI) into consideration. For the scenarios with perfect CSI, we explore the joint precoding design and common rate allocation to maximize the RE of RSMA-aided VLC systems under the constraints of quality of service (QoS) and linear operation region (LoR) of LED, and propose a primal-dual-gradient-based precoding strategy. Furthermore, in the presence of CSI estimation errors, we propose a worst-case robust precoding design by exploiting quadratic transform and <inline-formula><tex-math notation="LaTeX">$\mathcal {S}$</tex-math></inline-formula>-Procedure. Numerical results indicate that the proposed resource efficient RSMA algorithm achieves the tradeoff between EE and SE.https://ieeexplore.ieee.org/document/10499828/Rate splitting multiple accessresource efficiencyenergy efficiencyspectral efficiencytradeoff |
| spellingShingle | Jianfei Hu Chen Sun Jiaheng Wang Xiqi Gao Liang Xia Qixing Wang Resource Efficient and Robust RSMA for Visible Light Communications IEEE Photonics Journal Rate splitting multiple access resource efficiency energy efficiency spectral efficiency tradeoff |
| title | Resource Efficient and Robust RSMA for Visible Light Communications |
| title_full | Resource Efficient and Robust RSMA for Visible Light Communications |
| title_fullStr | Resource Efficient and Robust RSMA for Visible Light Communications |
| title_full_unstemmed | Resource Efficient and Robust RSMA for Visible Light Communications |
| title_short | Resource Efficient and Robust RSMA for Visible Light Communications |
| title_sort | resource efficient and robust rsma for visible light communications |
| topic | Rate splitting multiple access resource efficiency energy efficiency spectral efficiency tradeoff |
| url | https://ieeexplore.ieee.org/document/10499828/ |
| work_keys_str_mv | AT jianfeihu resourceefficientandrobustrsmaforvisiblelightcommunications AT chensun resourceefficientandrobustrsmaforvisiblelightcommunications AT jiahengwang resourceefficientandrobustrsmaforvisiblelightcommunications AT xiqigao resourceefficientandrobustrsmaforvisiblelightcommunications AT liangxia resourceefficientandrobustrsmaforvisiblelightcommunications AT qixingwang resourceefficientandrobustrsmaforvisiblelightcommunications |