| 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].Optoelectronics Letters,2012,8(2):142-145 |
| Design and experiment of post-equalization for OOK-NRZ visible light communication system |
| Author Name | Affiliation | | Zhang Shuang-zuo | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University,
Changchun 130012, China | | Zheng Chuan-tao | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University,
Changchun 130012, China | | Li Yan-ting | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University,
Changchun 130012, China | | Ye Wei-lin | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University,
Changchun 130012, China | | Liu Yang | College of Communication Engineering, Jilin University, Changchun 130012, China |
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| 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. |
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| This work has been supported by the Innovation Fund for Technology Based Firms of Changchun (No. 10ZC04), and the Undergraduate Innovative
Experiment Program of Jilin University (No. 2011C51174). |
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