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| Název: |
Optimal bit-and-power allocation algorithm for VLC-OFDM system. |
| Autoři: |
Ling Wei, Hongming Zhang, Bingyan Yu |
| Zdroj: |
Electronics Letters (Wiley-Blackwell); 6/9/2016, Vol. 52 Issue 12, p1036-1037, 2p, 5 Graphs |
| Témata: |
ORTHOGONAL frequency division multiplexing, VISIBLE spectra, ELECTROMAGNETIC interference, LIGHT emitting diodes, ADDITIVE white Gaussian noise |
| Abstrakt: |
An optimal bit-and-power allocation (BPA) algorithm for visible light communication-orthogonal frequency-division multiplexing (VLCOFDM) system is proposed and demonstrated. It is such notable that the signal noise in VLC-OFDM system is not addition white Gaussian noise and its power changes with the received signal power through experimental measurement. Thus the optimal Hughes-Hartog BPA algorithm based on variable noise power is presented. Compared with the traditional BPA algorithm, the experiment indicates that the proposed optimal BPA algorithm can achieve about 15.9% improvement of data rate for VLC-OFDM system. [ABSTRACT FROM AUTHOR] |
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