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8-Gb/s RGBY LED-Based WDM VLC System Employing High-Order CAP Modulation and Hybrid Post Equalizer
- Source :
- IEEE Photonics Journal, Vol 7, Iss 6, Pp 1-7 (2015)
- Publication Year :
- 2015
- Publisher :
- IEEE, 2015.
-
Abstract
- In this paper, for the first time, we propose the use of a hybrid post equalizer in a high-order carrierless-amplitude-and-phase-modulation-based visible light communication (VLC) system. The hybrid equalizer consists of a linear equalizer, a Volterra-series-based nonlinear equalizer, and a decision-directed least mean squares equalizer to simultaneously mitigate the linear and nonlinear distortions of the VLC system. A commercially available red-blue-green-yellow light-emitting diode (RBGY LED) is utilized for four-wavelength multiplexing. By the hybrid equalizer, an aggregate data rate of 8 Gb/s is experimentally achieved over a 1-m indoor free-space transmission with the bit error rate (BER) below the 7% forward error correction (FEC) limit of 3.8 × 10-3. To the best of our knowledge, this is the highest data rate ever reported in high-speed VLC systems.
Details
- Language :
- English
- ISSN :
- 19430655
- Volume :
- 7
- Issue :
- 6
- Database :
- Directory of Open Access Journals
- Journal :
- IEEE Photonics Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.88fdcf1204784d4cb767b658eb3a49a5
- Document Type :
- article
- Full Text :
- https://doi.org/10.1109/JPHOT.2015.2489927