High-speed phosphor-LED wireless communication system utilizing no blue filter

C. H. Yeh; C. W. Chow; H. Y. Chen; J. Chen; Y. L. Liu; Y. F. Wu

doi:10.1117/12.2060653

12 September 2014 High-speed phosphor-LED wireless communication system utilizing no blue filter

C. H. Yeh, C. W. Chow, H. Y. Chen, J. Chen, Y. L. Liu, Y. F. Wu

Proceedings Volume 9193, Novel Optical Systems Design and Optimization XVII; 91931A (2014) https://doi.org/10.1117/12.2060653
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

In this paper, we propose and investigate an adaptively 84.44 to 190 Mb/s phosphor-LED visible light communication (VLC) system at a practical transmission distance. Here, we utilize the orthogonal-frequency-division-multiplexing quadrature-amplitude-modulation (OFDM-QAM) modulation with power/bit-loading algorithm in proposed VLC system. In the experiment, the optimal analogy pre-equalization design is also performed at LED-Tx side and no blue filter is used at the Rx side for extending the modulation bandwidth from 1 MHz to 30 MHz. In addition, the corresponding free space transmission lengths are between 75 cm and 2 m under various data rates of proposed VLC. And the measured bit error rates (BERs) of < 3.8×10^-3 [forward error correction (FEC) limit] at different transmission lengths and measured data rates can be also obtained. Finally, we believe that our proposed scheme could be another alternative VLC implementation in practical distance, supporting < 100 Mb/s, using commercially available LED and PD (without optical blue filtering) and compact size.

Citation Download Citation

C. H. Yeh, C. W. Chow, H. Y. Chen, J. Chen, Y. L. Liu, and Y. F. Wu "High-speed phosphor-LED wireless communication system utilizing no blue filter", Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 91931A (12 September 2014); https://doi.org/10.1117/12.2060653

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