Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction
Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), confirmed as an efficient technique, has been applied in optical wireless communications (OWCs) to improve the transmission rate. However, the disadvantage of high peak-to-average power ratio (PAPR) also brings...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10049109/ |
| _version_ | 1828003539527401472 |
|---|---|
| author | Chen Sun Jia Zhao Jiaheng Wang Liang Xia Xiqi Gao Qixing Wang |
| author_facet | Chen Sun Jia Zhao Jiaheng Wang Liang Xia Xiqi Gao Qixing Wang |
| author_sort | Chen Sun |
| collection | DOAJ |
| description | Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), confirmed as an efficient technique, has been applied in optical wireless communications (OWCs) to improve the transmission rate. However, the disadvantage of high peak-to-average power ratio (PAPR) also brings into the OWC systems, especially for multi-user communications, resulting in low power efficiency. This paper proposes beam domain MIMO-OFDM OWCs with PAPR reduction. We describe the MIMO-OFDM OWC system architecture and derive the achievable sum rate and PAPR for multi-user OFDM systems, which are dominated by the precoding vectors. To reduce the PAPR, we design the precoding vectors to maximize the sum rate under the PAPR constraint. We propose an iterative process to obtain a candidate optimal solution by the sequential parametric convex approximation (SPCA) method. Furthermore, we prove that the PAPR increases with the number of users and propose a low complexity beam scheduling and power allocation algorithm. Numerical results validate that the proposed schemes can efficiently improve the transmission rate and reduce the PAPR. |
| first_indexed | 2024-04-10T07:00:10Z |
| format | Article |
| id | doaj.art-22554dc50b9740569d9ed5e0d2b9a5b3 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-10T07:00:10Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-22554dc50b9740569d9ed5e0d2b9a5b32023-02-28T00:00:08ZengIEEEIEEE Photonics Journal1943-06552023-01-0115211010.1109/JPHOT.2023.324648710049109Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR ReductionChen Sun0https://orcid.org/0000-0002-8352-9094Jia Zhao1Jiaheng Wang2https://orcid.org/0000-0002-9783-5471Liang Xia3Xiqi Gao4https://orcid.org/0000-0001-9107-6593Qixing Wang5National Mobile Communications Research Laboratory, Southeast University, Nanjing, ChinaNational Mobile Communications Research Laboratory, Southeast University, Nanjing, ChinaNational Mobile Communications Research Laboratory, Southeast University, Nanjing, ChinaChina Mobile Research Institute, Beijing, ChinaNational Mobile Communications Research Laboratory, Southeast University, Nanjing, ChinaChina Mobile Research Institute, Beijing, ChinaMultiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), confirmed as an efficient technique, has been applied in optical wireless communications (OWCs) to improve the transmission rate. However, the disadvantage of high peak-to-average power ratio (PAPR) also brings into the OWC systems, especially for multi-user communications, resulting in low power efficiency. This paper proposes beam domain MIMO-OFDM OWCs with PAPR reduction. We describe the MIMO-OFDM OWC system architecture and derive the achievable sum rate and PAPR for multi-user OFDM systems, which are dominated by the precoding vectors. To reduce the PAPR, we design the precoding vectors to maximize the sum rate under the PAPR constraint. We propose an iterative process to obtain a candidate optimal solution by the sequential parametric convex approximation (SPCA) method. Furthermore, we prove that the PAPR increases with the number of users and propose a low complexity beam scheduling and power allocation algorithm. Numerical results validate that the proposed schemes can efficiently improve the transmission rate and reduce the PAPR.https://ieeexplore.ieee.org/document/10049109/MIMO-OFDMPAPR reductionmulti-user optical wireless communicationsbeam domain |
| spellingShingle | Chen Sun Jia Zhao Jiaheng Wang Liang Xia Xiqi Gao Qixing Wang Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction IEEE Photonics Journal MIMO-OFDM PAPR reduction multi-user optical wireless communications beam domain |
| title | Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction |
| title_full | Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction |
| title_fullStr | Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction |
| title_full_unstemmed | Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction |
| title_short | Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction |
| title_sort | beam domain mimo ofdm optical wireless communications with papr reduction |
| topic | MIMO-OFDM PAPR reduction multi-user optical wireless communications beam domain |
| url | https://ieeexplore.ieee.org/document/10049109/ |
| work_keys_str_mv | AT chensun beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction AT jiazhao beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction AT jiahengwang beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction AT liangxia beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction AT xiqigao beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction AT qixingwang beamdomainmimoofdmopticalwirelesscommunicationswithpaprreduction |