High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems
The nonlinearity induced by light-emitting diode (LED) affects the normal transmission and reception, which significantly limits the performance of visible light communication (VLC) system. To address the problem induced by the nonlinearity of LED, a post-distorter for orthogonal frequency division...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9842300/ |
| _version_ | 1811315832093933568 |
|---|---|
| author | Ni Chen Jieling Wang Ba-Zhong Shen Mao Zhao |
| author_facet | Ni Chen Jieling Wang Ba-Zhong Shen Mao Zhao |
| author_sort | Ni Chen |
| collection | DOAJ |
| description | The nonlinearity induced by light-emitting diode (LED) affects the normal transmission and reception, which significantly limits the performance of visible light communication (VLC) system. To address the problem induced by the nonlinearity of LED, a post-distorter for orthogonal frequency division multiplexing (OFDM) based VLC is proposed in this paper. Radial basis function (RBF) interpolation, known as an excellent function approximation method, is investigated to implement the nonlinearity mitigations. To further remove the memory effect of LED, which could not be ignored, we propose to extend RBF to a high-dimensional interpolation so that it can eliminate both nonlinearity and memory effect simultaneously. The performance of the proposed RBF extension interpolation is verified by numerical simulations, and a better performance in suppressing nonlinearity is obtained in VLC-OFDM systems as compared with the frequency domain nonlinear compensation method. A signal-to-noise ratio gain of 2dB in terms of <inline-formula><tex-math notation="LaTeX">${{{E}_b} \mathord{/ {\vphantom {{{E}_b} {{N}_0}}} } {{N}_0}}$</tex-math></inline-formula> can be obtained when bit error rate is about 6*10<sup>−7</sup> at 6dB power back-off (PBO), while 6dB gain can be achieved when BER is 2*10<sup>−4</sup> at 4dB PBO. |
| first_indexed | 2024-04-13T11:38:26Z |
| format | Article |
| id | doaj.art-4bb866e860814648aad9e4744f371948 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-13T11:38:26Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-4bb866e860814648aad9e4744f3719482022-12-22T02:48:22ZengIEEEIEEE Photonics Journal1943-06552022-01-011441810.1109/JPHOT.2022.31941029842300High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication SystemsNi Chen0https://orcid.org/0000-0002-2175-9070Jieling Wang1https://orcid.org/0000-0002-9266-5215Ba-Zhong Shen2Mao Zhao3Telecommunication Engineering Department, State Key Laboratory of Integrated Services Network and Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, ChinaTelecommunication Engineering Department, State Key Laboratory of Integrated Services Network and Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, ChinaTelecommunication Engineering Department, State Key Laboratory of Integrated Services Network and Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, ChinaBeijing Fire and Rescue Department, Beijing, ChinaThe nonlinearity induced by light-emitting diode (LED) affects the normal transmission and reception, which significantly limits the performance of visible light communication (VLC) system. To address the problem induced by the nonlinearity of LED, a post-distorter for orthogonal frequency division multiplexing (OFDM) based VLC is proposed in this paper. Radial basis function (RBF) interpolation, known as an excellent function approximation method, is investigated to implement the nonlinearity mitigations. To further remove the memory effect of LED, which could not be ignored, we propose to extend RBF to a high-dimensional interpolation so that it can eliminate both nonlinearity and memory effect simultaneously. The performance of the proposed RBF extension interpolation is verified by numerical simulations, and a better performance in suppressing nonlinearity is obtained in VLC-OFDM systems as compared with the frequency domain nonlinear compensation method. A signal-to-noise ratio gain of 2dB in terms of <inline-formula><tex-math notation="LaTeX">${{{E}_b} \mathord{/ {\vphantom {{{E}_b} {{N}_0}}} } {{N}_0}}$</tex-math></inline-formula> can be obtained when bit error rate is about 6*10<sup>−7</sup> at 6dB power back-off (PBO), while 6dB gain can be achieved when BER is 2*10<sup>−4</sup> at 4dB PBO.https://ieeexplore.ieee.org/document/9842300/Memory effectnonlinear distortionradial basis function interpolationvisible light communication |
| spellingShingle | Ni Chen Jieling Wang Ba-Zhong Shen Mao Zhao High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems IEEE Photonics Journal Memory effect nonlinear distortion radial basis function interpolation visible light communication |
| title | High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems |
| title_full | High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems |
| title_fullStr | High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems |
| title_full_unstemmed | High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems |
| title_short | High-Dimensional Radial Basis Function Extension Interpolation Nonlinear Post-Distorter in Visible Light Communication Systems |
| title_sort | high dimensional radial basis function extension interpolation nonlinear post distorter in visible light communication systems |
| topic | Memory effect nonlinear distortion radial basis function interpolation visible light communication |
| url | https://ieeexplore.ieee.org/document/9842300/ |
| work_keys_str_mv | AT nichen highdimensionalradialbasisfunctionextensioninterpolationnonlinearpostdistorterinvisiblelightcommunicationsystems AT jielingwang highdimensionalradialbasisfunctionextensioninterpolationnonlinearpostdistorterinvisiblelightcommunicationsystems AT bazhongshen highdimensionalradialbasisfunctionextensioninterpolationnonlinearpostdistorterinvisiblelightcommunicationsystems AT maozhao highdimensionalradialbasisfunctionextensioninterpolationnonlinearpostdistorterinvisiblelightcommunicationsystems |