標題: Thresholding schemes for visible light communications with CMOS camera using entropy-based algorithms
作者: Liang, Kevin
Chow, Chi-Wai
Liu, Yang
Yeh, Chien-Hung
光電工程學系
光電工程研究所
Department of Photonics
Institute of EO Enginerring
公開日期: 31-Oct-2016
摘要: Recent visible light communication (VLC) studies mainly used positive-intrinsicnegative (PIN) and avalanche photodiode (APD). VLC using embedded complementarymetal- oxide-semiconductor (CMOS) camera is attractive. Using the rolling shutter effect of CMOS camera can increase the VLC data rate; and different techniques have been proposed for improving the demodulation of the rolling shutter pattern. Important steps to demodulate the rolling shutter pattern are the smoothing and the application of efficient thresholding to distinguish data logic. Here, we propose and demonstrate for the first time two entropy thresholding algorithms, including maximum entropy thresholding and minimum cross entropy thresholding. Experimental evaluation to compare their bit-error-rate (BER) performances and efficiencies are also performed. (C) 2016 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.24.025641
http://hdl.handle.net/11536/132873
ISSN: 1094-4087
DOI: 10.1364/OE.24.025641
期刊: OPTICS EXPRESS
Volume: 24
Issue: 22
起始頁: 25641
結束頁: 25646
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