Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC
Recently, there has been a huge interest in research toward visible light communication (VLC) targeted toward fifth generation (5G) and beyond standards. One of the performance limiting factors in visible light communications is the nonlinear characteristics of the light-emitting diode (LED), which...
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IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7784808/ |
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| author | Rangeet Mitra Vimal Bhatia |
| author_facet | Rangeet Mitra Vimal Bhatia |
| author_sort | Rangeet Mitra |
| collection | DOAJ |
| description | Recently, there has been a huge interest in research toward visible light communication (VLC) targeted toward fifth generation (5G) and beyond standards. One of the performance limiting factors in visible light communications is the nonlinear characteristics of the light-emitting diode (LED), which is used as a transmitter in VLC. Among seminal works for mitigating performance-limiting nonlinearity, the modified cascaded multimodulus algorithm (MCMMA) based Volterra filtering approaches have been proposed recently for blind LED postdistortion. This work proposes an unsupervised normalized Hammerstein improved multistage clustering (HIMSC) based postdistorter that is formulated as a more suitable cost function, as compared with the Volterra-MCMMA-based approaches. Theoretical bounds on step size are found to ensure convergence of the proposed postdistorter. Simulations over IEEE 802.15 personal area network (PAN) channels indicate that the proposed normalized HIMSC delivers much better performance as compared with the Volterra-MCMMA in terms of mean square error (MSE) and bit error rate (BER) performance. |
| format | Article |
| id | doaj-art-1cb06925aaa54b64aea3c6e846cb08da |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-1cb06925aaa54b64aea3c6e846cb08da2025-08-20T02:38:35ZengIEEEIEEE Photonics Journal1943-06552017-01-019111010.1109/JPHOT.2016.26395067784808Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLCRangeet Mitra0Vimal Bhatia1Indian Institute of Technology Indore, Indore, IndiaIndian Institute of Technology Indore, Indore, IndiaRecently, there has been a huge interest in research toward visible light communication (VLC) targeted toward fifth generation (5G) and beyond standards. One of the performance limiting factors in visible light communications is the nonlinear characteristics of the light-emitting diode (LED), which is used as a transmitter in VLC. Among seminal works for mitigating performance-limiting nonlinearity, the modified cascaded multimodulus algorithm (MCMMA) based Volterra filtering approaches have been proposed recently for blind LED postdistortion. This work proposes an unsupervised normalized Hammerstein improved multistage clustering (HIMSC) based postdistorter that is formulated as a more suitable cost function, as compared with the Volterra-MCMMA-based approaches. Theoretical bounds on step size are found to ensure convergence of the proposed postdistorter. Simulations over IEEE 802.15 personal area network (PAN) channels indicate that the proposed normalized HIMSC delivers much better performance as compared with the Volterra-MCMMA in terms of mean square error (MSE) and bit error rate (BER) performance.https://ieeexplore.ieee.org/document/7784808/Multi-stage clustering equalizerHammerstein filtering802.15 visible light communication (VLC) channel |
| spellingShingle | Rangeet Mitra Vimal Bhatia Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC IEEE Photonics Journal Multi-stage clustering equalizer Hammerstein filtering 802.15 visible light communication (VLC) channel |
| title | Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC |
| title_full | Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC |
| title_fullStr | Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC |
| title_full_unstemmed | Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC |
| title_short | Unsupervised Multistage-Clustering-Based Hammerstein Postdistortion for VLC |
| title_sort | unsupervised multistage clustering based hammerstein postdistortion for vlc |
| topic | Multi-stage clustering equalizer Hammerstein filtering 802.15 visible light communication (VLC) channel |
| url | https://ieeexplore.ieee.org/document/7784808/ |
| work_keys_str_mv | AT rangeetmitra unsupervisedmultistageclusteringbasedhammersteinpostdistortionforvlc AT vimalbhatia unsupervisedmultistageclusteringbasedhammersteinpostdistortionforvlc |