High Speed Imaging 3 × 3 MIMO Phosphor White-Light LED Based Visible Light Communication System

IEEE Photonics Journal

Chin-Wei Hsu¹  Chi-Wai Chow¹  Chien-Hung Yeh²  Yen-Liang Liu³  I-Cheng Lu³  Yang Liu⁴ 

[1] Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan;Department of Photonics, Feng Chia University, Seatwen, Taichung, Taiwan;Industrial Technology Research Institute, Hsinchu, Taiwan;Philips Electronics Ltd., Hong Kong;

关键词: Light-emitting diode (LED);    multiple-input multiple-output (MIMO);    visible light communication (VLC).;   

DOI  :  10.1109/JPHOT.2016.2633395

来源: DOAJ

【 摘 要 】

The phosphor light-emitting diode (LED) has been widely used not only for indoor illumination but for the optical transmitter (Tx) as well in visible light communication (VLC). However, the transmission data rate is significantly limited by the modulation bandwidth of LED because of the low-speed response of phosphor. In order to enhance the data rate of the VLC system, we demonstrate a 3 × 3 imaging multiple-input multiple-output (MIMO) VLC system. Besides, the pre-equalizer circuit is used to extend the bandwidth of the LED Tx. Orthogonal frequency division multiplexing (OFDM) with bit-loading algorithm is used. By using the proposed scheme, the original 1 MHz bandwidth commercially available phosphor white light LED can achieve 1 Gbps data rate over 1-m free-space transmission distance.

【 授权许可】

Unknown