一个开源的QAM调制解调器用于FPGA中的可见光通信,用于实时应用
1Information Engineering Department, University of Florence, St. S.Marta No. 3, 50129 Florence, Italy.
Sensors (Basel, Switzerland)
|February 13, 2026
概括
本研究介绍了一种新的,资源高效的算法,用于在FPGA上使用方程振幅调制 (QAM) 的实时可见光通信 (VLC). 实验结果显示,低延迟的链接可达6 Mb/s,克服带宽限制.
科学领域:
- 电气工程和计算机科学
- 光学通信是指光学通信.
- 无线网络无线网络.
背景情况:
- 可见光通信 (VLC) 提供高数据速率和低延迟,对于汽车和其他应用至关重要.
- 现有的基于白色LED的VLC系统面临带宽限制 (MHz范围),阻碍了高速应用.
- 高级调制,如方程振幅调制 (QAM),提高了光谱效率,但对实时,低延迟系统提出了实施挑战.
研究的目的:
- 为了解决对低延迟,实时VLC链接缺乏实验验证的问题.
- 在FPGA上提出和实施一个资源高效的QAM调制器/解调器 (MODEM),用于实时VLC.
- 为未来的低延迟VLC研究提供开源,可扩展的基础.
主要方法:
- 为FPGA实现量身定制的修改后,计算效率高的QAM算法的开发.
- 在拟议的算法中集成同步循环.
- 使用白功率LED和不同的QAM星座 (4-, 16-, 64-QAM) 进行实验验证.
主要成果:
- 成功演示了实时VLC链路运行在2,4和6Mb/s使用4-,16-和64-QAM,分别.
- 实现了低于1.3微秒的超低延迟测量.
- 拟议的MODEM可作为开源代码提供.
结论:
- 开发的基于FPGA的QAM调制解调器有效地克服了白色LED VLC中的带宽限制.
- 该系统能够实现实时高速,低延迟的VLC,经过实验验证.
- 该解决方案的开源性质有利于在先进的VLC系统中进行进一步的研究和开发.
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