Code design for run-length control in visible light communication

Zong-yan LI; Hong-lu YU; Bao-ling SHAN; De-xuan ZOU; Shi-yin LI

doi:10.1631/FITEE.1900526

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Code design for run-length control in visible light communication

Regular Papers | Updated：2022-05-19

- Code design for run-length control in visible light communication
- 基于游程长度控制约束的可见光通信编码设计
- Frontiers of Information Technology & Electronic Engineering Vol. 21, Issue 9, Pages: 1397-1411(2020)
- Affiliations：
  
  School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
  School of Electrical and Data Engineering, University of Technology Sydney, Sydney 2007, Australia
  School of Electrical Engineering and Automation, Jiangsu Normal University, Xuzhou 221116, China
- Author bio：
  
  Zong-yan LI, E-mail: lizongyan@cumt.edu.cn
  [ "Hong-lu YU, E-mail: yuhonglu1993@126.com" ]
  [ "Bao-ling SHAN, E-mail: baoling.shan@student.uts.edu.au" ]
- Funds：
- DOI：10.1631/FITEE.1900526
  CLC： TN911.22
- Received：26 September 2019，
  
  Revised：2020-;8-;7，
  
  Published：2020-09
- Accepted：
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Zong-yan LI, Hong-lu YU, Bao-ling SHAN, et al. Code design for run-length control in visible light communication[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(9): 1397-1411.
DOI：

Zong-yan LI, Hong-lu YU, Bao-ling SHAN, et al. Code design for run-length control in visible light communication[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(9): 1397-1411. DOI： 10.1631/FITEE.1900526.

摘要

在可见光通信系统中，游程长度受限码可用于促进可靠的数据传输并提供无闪烁照明。本文提出新颖的高码率游程长度受限码，以改善传输系统的误码率性能以及减少光信号闪烁。基于有限状态机设计原理，通过优化最小汉明距离和利用状态分裂法获取较小状态数，提出两种游程长度受限码编码方案以获得高编码增益。在游程长度受限码的编码设计方案中，码字集的构造至关重要；在码字集的设计中引入集合划分算法准则。详细描述各种游程长度受限码的闪烁特性和最小汉明距离，并基于直方图比较不同码字的闪烁性能。最后，基于开关键控调制的可见光通信系统对所提游程长度受限码作仿真验证及性能分析。仿真结果表明，与现有游程长度受限码相比，在闪烁控制约束下，所提游程长度受限码的误码性能更优。

Abstract

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.

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references

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