Code design for run-length control in visible lightcommunication  

作　　者：Zong-yan LI Hong-lu YU Bao-ling SHAN De-xuan ZOU Shi-yin LI 

机构地区：[1]School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221116,China [2]School of Electrical and Data Engineering,University of Technology Sydney,Sydney 2007,Australia [3]School of Electrical Engineering and Automation,Jiangsu Normal University,Xuzhou 221116,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2020年第9期1397-1411,共15页信息与电子工程前沿（英文版）

基　　金：Project supported by the Fundamental Research Funds for the Central Universities,China(No.2020QN15)。

摘　　要：Run-length limited(RLL)codes can facilitate reliable data transmission and provide flicker-free illumination in visible light communication(VLC)systems.We propose novel high-rate RLL codes,which can improve error performance and mitigate flicker.Two RLL coding schemes are developed by designing the finite-state machine to further enhance the coding gain by improving the minimum Hamming distance and using the state-splitting method to realize small state numbers.In our RLL code design,the construction of the codeword set is critical.This codeword set is designed considering the set-partitioning algorithm criterion.The flicker control and minimum Hamming distance of the various proposed RLL codes are described in detail,and the flicker performances of different codes are compared based on histograms.Simulations are conducted to evaluate the proposed RLL codes in on-off keying modulation VLC systems.Simulation results demonstrate that the proposed RLL codes achieve superior error performance to the existing RLL codes.

关 键 词：Visible light communication Run-length limited codes Finite-state machine Minimum Hamming distance 

分 类 号：TN911.22[电子电信—通信与信息系统]