HMM-based Signal Characterization and Detection for VLC under Weak Illuminance

被引：0
作者：
Liu, Xiaona [1 ]
Gong, Chen [1 ]
Li, Shangbin [1 ]
Xu, Zhengyuan [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Wireless Opt Commun, Hefei 230027, Anhui, Peoples R China
[2] Tsinghua Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
来源：
2017 IEEE GLOBECOM WORKSHOPS (GC WKSHPS) | 2017年
基金：
中国国家自然科学基金;
关键词：
visible light communication (VLC); PMT; pulses; Hidden Markov Model (HMM); Viterbi detection; VISIBLE-LIGHT COMMUNICATION; SYSTEMS; ENTROPY;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Visible light communication (VLC) under weak illuminance includes both regular peak light emitting diode (LED) transmission power with low duty cycle and low LED transmission peak power with regular duty cycle. In this work, we address the signal characterization and transmission rate of VLC with low transmission power and regular duty cycle. We first characterize the LED nonlinear effect via a state transition model based on the experimental measurement. Then we adopt hidden Markov model (HMM) to characterize the LED transmission under low peak power. Based on the HMM, we propose a Viterbi detection method to detect the state of signals. Numerical results based on the HMM are presented.
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页数：6
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