光电子快报(英文版), 2012, 8 (2): 142, Published Online: Jul. 12, 2017   

Design and experiment of post-equalization for OOK-NRZ visible light communication system

Author Affiliations
1 State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University,Changchun 130012, China
2 College of Communication Engineering, Jilin University, Changchun 130012, China
Abstract
Considering that the white LED’s spectral response decreases exponentially with the increase of carrier frequency for the on-off-keying non-return-to-zero (OOK-NRZ) visible light communication (VLC) data links, a first-order RC high-pass filter is designed and fabricated as a post-equalizer (PE) to compensate the LED spectral response. Formulation and simulation are both available for illustrating the VLC performance with and without PE. Experiments are performed in detail for the fabricated OOK-NRZ VLC system integrated with PE. The data transmission results show that by using PE, the measured carrier bandwidth is enhanced from 0.8 (0.4-1.2) MHz to 1.7 (0-1.7) MHz, and the bit-error-rate (BER) is less than 10-9. It proves the feasibility of the proposed scheme in OOK-NRZ VLC data links.

ZHANG Shuang-zuo, ZHENG Chuan-tao, LI Yan-ting, YE Wei-lin, LIU Yang. Design and experiment of post-equalization for OOK-NRZ visible light communication system[J]. 光电子快报(英文版), 2012, 8(2): 142.

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