Title: Polarization-multiplexed 2 X 2 phosphor-LED wireless light communication without using analog equalization and optical blue filter
Authors: Yeh, C. H.
Chen, H. Y.
Liu, Y. L.
Chow, C. W.
Department of Photonics
Keywords: Visible light communication (VLC);LED;Polarization-multiplexing;Free space communication
Issue Date: 1-Jan-2015
Abstract: We propose and experimentally demonstrate a 380 (2 x 190) Mbps phosphor-light-emitting-diode (LED) based visible light communication (VLC) system by using 2 x 2 polarization-multiplexing design for in-building access applications. To the best of our knowledge, this is the first time of employing polarization-multiplexing to achieve a high VLC transmission capacity by using phosphor-based white-LED without optical blue filter. Besides, utilizing the optimum resistor-inductor-capacity (RLC) bias-tee design, it can not only perform the function of combining the direct-current (DC) and the electrical data signal, but also act as a simple LED-Tx circuit. No optical blue filter and complicated post-equalization are required at the Rx. Here, the orthogonal-frequency-division-multiplexing (OFDM) quadrature-amplitude-modulation (QAM) with bit-loading is employed to enhance the transmission data rate. (C) 2014 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optcom.2014.08.003
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2014.08.003
Volume: 334
End Page: 11
Appears in Collections:Articles