Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding
Aiming to improve the performance of free space visible light communication (VLC) system, we combined the use of rotation coding together with geometric shaping (GS) technology in carrierless-amplitude-and-phase (CAP) modulation visible light communication system. In this paper, we designed a new GS...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8723118/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850093768244461568 |
|---|---|
| author | Fangchen Hu Peng Zou Guoqiang Li Weixiang Yu Nan Chi |
| author_facet | Fangchen Hu Peng Zou Guoqiang Li Weixiang Yu Nan Chi |
| author_sort | Fangchen Hu |
| collection | DOAJ |
| description | Aiming to improve the performance of free space visible light communication (VLC) system, we combined the use of rotation coding together with geometric shaping (GS) technology in carrierless-amplitude-and-phase (CAP) modulation visible light communication system. In this paper, we designed a new GS-16QAM constellation named Triangular. Triangular GS-16QAM has a better noise resistance due to its larger value of the minimum Euclidean distance. Based on the excellent new 16QAM constellation, we further improve the performance of VLC system utilizing a proposed new coding technology named rotation coding after the quadrature-amplitude-modulation (QAM) mapping. The rotation coding can reduce the overlapping problem of the outer constellation points induced by non-linear impairment. Finally, the upper gain about 1 dB is achieved with rotation coding in 1.2 m free space VLC communication when the transmission speed is relatively low about 80 Mb/s. While the transmission speed is relatively high around 2 Gb/s in CAP-VLC system, Triangular constellation with rotation coding still has positive effect for transmission quality with about 1 dB enhancement than the square 16QAM. All of these results are verified by simulations and experiments. |
| format | Article |
| id | doaj-art-f235a121f4734c1fb6faa3d80347593c |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-f235a121f4734c1fb6faa3d80347593c2025-08-20T02:41:49ZengIEEEIEEE Photonics Journal1943-06552019-01-0111511210.1109/JPHOT.2019.29190708723118Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation CodingFangchen Hu0https://orcid.org/0000-0003-3859-1558Peng Zou1Guoqiang Li2Weixiang Yu3https://orcid.org/0000-0003-3851-3330Nan Chi4https://orcid.org/0000-0003-4966-3844Key Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai, ChinaKey Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai, ChinaKey Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai, ChinaKey Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai, ChinaKey Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai, ChinaAiming to improve the performance of free space visible light communication (VLC) system, we combined the use of rotation coding together with geometric shaping (GS) technology in carrierless-amplitude-and-phase (CAP) modulation visible light communication system. In this paper, we designed a new GS-16QAM constellation named Triangular. Triangular GS-16QAM has a better noise resistance due to its larger value of the minimum Euclidean distance. Based on the excellent new 16QAM constellation, we further improve the performance of VLC system utilizing a proposed new coding technology named rotation coding after the quadrature-amplitude-modulation (QAM) mapping. The rotation coding can reduce the overlapping problem of the outer constellation points induced by non-linear impairment. Finally, the upper gain about 1 dB is achieved with rotation coding in 1.2 m free space VLC communication when the transmission speed is relatively low about 80 Mb/s. While the transmission speed is relatively high around 2 Gb/s in CAP-VLC system, Triangular constellation with rotation coding still has positive effect for transmission quality with about 1 dB enhancement than the square 16QAM. All of these results are verified by simulations and experiments.https://ieeexplore.ieee.org/document/8723118/VLCgeometric shapingRotation codingCAP modulation. |
| spellingShingle | Fangchen Hu Peng Zou Guoqiang Li Weixiang Yu Nan Chi Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding IEEE Photonics Journal VLC geometric shaping Rotation coding CAP modulation. |
| title | Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding |
| title_full | Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding |
| title_fullStr | Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding |
| title_full_unstemmed | Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding |
| title_short | Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding |
| title_sort | enhanced performance of cap modulated visible light communication system utilizing geometric shaping and rotation coding |
| topic | VLC geometric shaping Rotation coding CAP modulation. |
| url | https://ieeexplore.ieee.org/document/8723118/ |
| work_keys_str_mv | AT fangchenhu enhancedperformanceofcapmodulatedvisiblelightcommunicationsystemutilizinggeometricshapingandrotationcoding AT pengzou enhancedperformanceofcapmodulatedvisiblelightcommunicationsystemutilizinggeometricshapingandrotationcoding AT guoqiangli enhancedperformanceofcapmodulatedvisiblelightcommunicationsystemutilizinggeometricshapingandrotationcoding AT weixiangyu enhancedperformanceofcapmodulatedvisiblelightcommunicationsystemutilizinggeometricshapingandrotationcoding AT nanchi enhancedperformanceofcapmodulatedvisiblelightcommunicationsystemutilizinggeometricshapingandrotationcoding |