基于色移键控和有限状态机的联合编码设计

李嘉惠; 李宗艳; 李世银

doi:10.13756/j.gtxyj.2021.05.002

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基于色移键控和有限状态机的联合编码设计

光通信系统与网络技术 | 更新时间：2022-06-20

- 基于色移键控和有限状态机的联合编码设计
- Joint Coding Design based on CSK and FSM
- 光通信研究 2021年第5期页码：15-23
- 作者机构：
  
  中国矿业大学信息与控制工程学院，江苏　徐州　221116
- 作者简介：
  
  李嘉惠（1995-），女，河北廊坊人。硕士，主要研究方向为无线通信。
  李宗艳，讲师。E-mail：lizongyan@cumt.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(61771474);徐州市重点研发计划资助项目(KC18171);山东省重大科技创新工程资助项目(2019JZZY020505)
- DOI：10.13756/j.gtxyj.2021.05.002
  中图分类号： TN929.1
- 纸质出版日期：2021-10-10，
  
  收稿日期：2020-12-28，
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李嘉惠, 李宗艳, 李世银. 基于色移键控和有限状态机的联合编码设计[J]. 光通信研究, 2021,(5):15-23.

LI Jia-hui, LI Zong-yan, LI Shi-yin. Joint Coding Design based on CSK and FSM[J]. Study on Optical Communications, 2021,(5):15-23.
李嘉惠, 李宗艳, 李世银. 基于色移键控和有限状态机的联合编码设计[J]. 光通信研究, 2021,(5):15-23. DOI： 10.13756/j.gtxyj.2021.05.002.

LI Jia-hui, LI Zong-yan, LI Shi-yin. Joint Coding Design based on CSK and FSM[J]. Study on Optical Communications, 2021,(5):15-23. DOI： 10.13756/j.gtxyj.2021.05.002.

摘要

针对可见光通信（VLC）中拓展圆星座的色移键控（CSK）调制调制阶数一定时存在误码率性能较差的问题，文章首先对星座点进行优化设计，在保持星座点指向三角形中心不变的情况下重新设计星座结构，改变星座点位置，增大星座点间最小码距，以改善误码率性能；其次，为进一步提高VLC信号的传输质量，文章引入有限状态机（FSM）原理，进行联合调制设计，进一步改善了误码率；最后，进行了仿真验证及性能分析，仿真结果表明，相比于传统的CSK调制技术，文章提出的优化拓展圆形星座CSK和FSM联合调制有更好的误码率性能，在10

-6

级别误码率下，星座点数为4的CSK和FSM的联合编码（CC-FSM）相比于4-CSK有2.1 dB的增益；8CC-FSM码相比于8-CSK有1.7 dB的增益。

Abstract

In the Visible Light Communication (VLC) system based on circle Color Shift Keying (CSK) modulation constellation

the bit error rate performance is poorer under certain number of modulation order. In this paper

we optimize the constellation point design

in keeping the constellation points under the condition of invariable pointing triangle center redesigned constellation structure. We change the constellation point location and increase the minimum code distance between constellation points to improve the bit error rate performance. In order to further improve the transmission quality of VLC signal

the principle of Finite State Machine (FSM) is introduced to carry out joint coding design to further improve bit error rate. Finally

simulation verification and performance analysis are carried out. The simulation results show that

compared with the traditional CSK modulation technology

the optimized extended circular constellation CSK and FSM combined coding proposed in this paper have better bit error rate performance. The gain of 4 Combination Coding-Finite State Machine (CC-FSM) code is 2.1 dB compared with that of 4-CSK

and the gain of 8CC-FSM code is 1.7 dB compared with that of 8-CSK.

关键词

可见光通信色移键控有限状态机拓展圆星座

Keywords

VLCCSKFSMextended circular constellation

references

Wang T, Yang F, Song J, et al. Dimming Techniques of Visible Light Communications for Human-Centric Illumination Networks: State-of-the-Art, Challenges, and Trends[J]. IEEE Wireless Communications, 2020, 27(4): 88-95.

Wang J, Liu C, Wang J, et al. Physical-Layer Security for Indoor Visible Light Communications: Secrecy Capacity Analysis[J]. IEEE Transactions on Communications, 2018, 66(12): 6423-6436.

Wang J, Ge H, Lin M, et al. On the Secrecy Rate of Spatial Modulation-Based Indoor Visible Light Communications[J]. IEEE Journal on Selected Areas in Communications, 2019, 37(9): 2087-2101.

Ma S, Yang R, He Y, et al. Achieving Channel Capacity of Visible Light Communication[J]. IEEE Systems Journal, 2020, 15(2): 1652-1663.

Ma S, Yang R, Li H, et al. Achievable Rate with Closed-Form for SISO Channel and Broadcast Channel in Visible Light Communication Networks[J]. Journal of Lightwave Technology, 2017, 35(14): 2778-2787.

IEEE Std 802.15.7-2011, IEEE Standard for Local and Metropolitan Area Networks–Part 15.7: Short-Range Wireless Optical Communication Using Visible Light[S].

Drost R J, Sadler B M. Constellation Design for Color-Shift Keying Using Billiards Algorithms[C]//Globecom Workshops (GC Wkshps). Miami, FL, USA: IEEE, 2010: 5700472.

Monteiro E, Hranilovic S. Constellation Design for Color-Shift Keying Using Interior Point Methods[C]//Globecom Workshops (GC Wkshps). Anaheim, CA, USA: IEEE, 2012: 6477755.

Halawi S, Yaacoub E, Kassir S, et al. Performance Analysis of Circular Color Shift Keying in VLC Systems with Camera-based Receivers[J]. IEEE Transactions on Communications, 2019, 67(6): 4252-4266.

Tzikas A E, Sahinis A, Trevlakis S E, et al. 3-Color Shift Keying for Indoor Visible Light Communications[J]. IEEE Communications Letters, 2019, 23(12): 2271-2274.

Mejia C E, Georghiades C N. Coding for Visible Light Communication Using Color-Shift Keying Constellations[J]. IEEE Transactions on Communications, 2019, 67(7): 4955-4966.

Wachsmann U, Fischer R F H, Huber J B. Multilevel Codes: Theoretical Concepts and Practical Design Rules[J]. IEEE Transactions on Information Theory, 1999, 45(5): 1361-1391.

Wachsmann U, Huber J B. Distance Profile of Multilevel Coded Transmission and Rate Design[C]//1998 Information Theory Workshop.Killarney, Ireland: IEEE, 1998: 706374.

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