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Multiband channel characteristics for indoor visible light communications

机译：室内可见光通信的多频带信道特性

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摘要

We present a multiband ray tracing (MRT) algorithm to analyze the indoor multiband channel characteristics for visible light communications (VLC). As visible light spans a wide spectrum from 380 to 780 nm, spectral reflectivities of walls are wavelength dependent. This model is able to analyze the multiband channel in VLC and provide the channel information for implementing the wavelength division multiplexing VLC system. To validate the effectiveness of the MRT model, an extensive indoor measurement of the multipath channel characteristics has been presented. Effects of relative angles from lighting emitting diodes (LEDs) to receivers and the variation of receiver locations have been taken into consideration. Theoretical results from the MRT model are validated against the measurement results on the channel path loss of the typical wavelength at 420 nm. Furthermore, channel characteristics like the root mean square delay spread and the spectral response of the three typical wavelengths based on the red green blue (RGB) LEDs are analyzed by the MRT model simulation. Finally, comparisons of receiver positions, relative angle as well as field-of-view angles, for three wavelengths are considered.
机译：我们提出了一种多波段光线追踪（MRT）算法，以分析室内多波段可见光通信（VLC）的信道特性。由于可见光的光谱范围从380到780 nm，因此壁的光谱反射率与波长有关。该模型能够分析VLC中的多频带信道，并为实现波分复用VLC系统提供信道信息。为了验证MRT模型的有效性，已经提出了对多径通道特性的广泛室内测量。已经考虑了从发光二极管（LED）到接收器的相对角度的影响以及接收器位置的变化。针对在420 nm处典型波长的通道路径损耗的测量结果，验证了MRT模型的理论结果。此外，通过MRT模型仿真分析了基于均方根延迟扩展的信道特性以及基于红绿蓝（RGB）LED的三种典型波长的光谱响应。最后，考虑了三种波长的接收器位置，相对角度以及视野角的比较。

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  • 来源
    《Optical engineering》 |2014年第10期|106101.1-106101.9|共9页
  • 作者

    Yang Xiang; Min Zhang; Mohsen Kavehrad; M. I. Sakib Chowdhury; Cheng Li; Rong Chen; Jian Wu; Xiongyan Tang;

  • 作者单位

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China;

    Pennsylvania State University, University Park, Department of Electrical Engineering, Pennsylvania 16802, United States;

    Pennsylvania State University, University Park, Department of Electrical Engineering, Pennsylvania 16802, United States;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China;

    Jilin University, College of Communication Engineering, Changchun 130012, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    visible light communications; indoor measurement; ray-tracing; multiband; wavelength dependent;

    机译：可见光通信;室内测量;射线追踪多频带波长依赖性;

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