基于游程长度控制约束的可见光通信编码设计（英文）

发布时间：2021-06-25 09:25

　　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。 

【文章来源】：Frontiers of Information Technology & Electronic Engineering. 2020,21(09)EISCICSCD

【文章页数】：16 页

【文章目录】：
1 Introduction
2 RLL code design using finite-state machines
    2.1 Finite-state machines
    2.2 High-rate RLL code design with two states
3 RLL code design with large dmin
    3.1 High-rate codes with dmin=3 and small state numbers
        3.1.1 Set-partitioning algorithm
        3.1.2 FSM design for rate(n-1)/n RLL codes with dmin=3 and small state numbers
    3.2 High-rate codes with dmin=4 and small state numbers
4 Flicker analysis and simulation re-sults
    4.1 System model
    4.2 Flicker analysis
    4.3 Simulation results
5 Conclusions
Contributors
Compliance with ethics guidelines
Appendix A:Possible mapping codes for the rate 4/5 and rate 5/6 RLL codes
Appendix B:Brightness level for referenced RLL codes



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