概括
本研究介绍了一种集成的可见光通信 (VLC) 和定位系统,提供安全的数据传输,准确的室内定位和无闪的照明. 该系统实现了高物理层安全性和可靠的通信,而不会影响用户体验.
科学领域:
- 光学无线通信的无线通信
- 信息安全 信息安全
- 室内定位系统 室内定位系统
背景情况:
- 可见光通信 (VLC) 在物理层提供了信息理论安全的潜力.
- 准确的位置信息对于安全的VLC频道估计和方案设计至关重要.
- 现有的系统往往缺乏通信,定位和照明质量的综合功能.
研究的目的:
- 提出一个集成的VLC和定位系统,具有三重功能:高精度室内定位,物理层安全的VLC和闪减轻照明.
- 开发新的信号处理技术,以实现高效的数据和定位信号的融合和分离.
- 设计一个强大的错误纠正方案,同时确保安全性和可靠性.
主要方法:
- 一种异质信号混合线路编码方案,用于信号在发射器的收.
- 一个混合异质信号提取方案,使用摄影探测器和CMOS图像传感器在接收器.
- 一个基于极点代码的前向错误校正方案,利用定位信息来实现物理层安全.
主要成果:
- 在模拟中实现了0.76的保密密码率和0.38的传输效率,没有可感知的闪.
- 在实验中显示出平均定位精度为3.35厘米.
- 将合法接收器位误差率降低到<10-7>,同时保持窃听器位误差率在~0.5,在1Mbps时产生0.9994的高保密能力.
结论:
- 拟议的集成系统有效地结合了高精度的室内定位,物理层安全的VLC和无闪的照明.
- 新的编码和信号提取方案可以实现同时高速通信,可靠的定位和强大的安全性.
- 这种方法显著提高了光学无线通信系统的安全性和实用性.
相关概念视频
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01:28Field Application of Global Positioning System
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