激光与光电子学进展, 2017, 54 (8): 080003, 网络出版: 2017-08-02
高速可见光通信硬件预均衡技术研究进展 下载: 935次
Research Progress on Hardware Pre-Equalization Technology for High-Speed Visible Light Communication
光通信 可见光通信 硬件预均衡 带宽 发光二极管 optical communications visible light communications hardware pre-equalization bandwidth light-emitting diode
摘要
基于发光二极管(LED)的可见光通信(VLC)技术能够实现照明和数据通信的双重功能, 成为近年来无线通信的研究热点之一。目前商用LED较小的调制带宽在很大程度上制约了高速VLC系统的快速发展。为了解决这一问题, 提出了通过硬件预均衡技术拓宽VLC系统的-3 dB调制带宽的方法, 有效提高VLC系统传输速率;分析总结了近年来国内外应用于高速VLC系统中硬件预均衡技术的发展脉络和应用现状, 并对比分析了不同预均衡方案的均衡控制策略、均衡电路结构以及均衡效果; 对均衡技术的发展趋势提出建议, 为今后高速VLC技术的研究提供参考。
Abstract
A visible light communication (VLC) technology based on light-emitting diode (LED), which integrates the dual functions of lighting and data communication, is becoming a hot topic of wireless communication research. Deficient modulation bandwidth of commercial LED limits the development of high speed transmission of VLC system. In order to solve the problem, a hardware pre-equalization technology is proposed to extend the -3 dB modulation bandwidth of VLC system effectively, and the transmission rate of VLC system is improved. The development progress and the application status both at home and abroad of hardware pre-equalization technology used in high-speed VLC system are summarized. The comparison of equalization control strategy, equalization circuit structure and equalization effect of different pre-equalization plans is carried out. The research trend of equalization technology is made, which provides a reference for the research of high-speed VLC technology in the future.
宋小庆, 魏有财, 赵梓旭, 王慕煜. 高速可见光通信硬件预均衡技术研究进展[J]. 激光与光电子学进展, 2017, 54(8): 080003. Song Xiaoqing, Wei Youcai, Zhao Zixu, Wang Muyu. Research Progress on Hardware Pre-Equalization Technology for High-Speed Visible Light Communication[J]. Laser & Optoelectronics Progress, 2017, 54(8): 080003.