Analysis of nonline-of-sight visible light communications

Petr Chvojka; Stanislav Vitek; Stanislav Zvanovec; Zabih Ghassemlooy; Sujan Rajbhandari

doi:10.1117/1.OE.56.11.116116

30 November 2017 Analysis of nonline-of-sight visible light communications

Petr Chvojka, Stanislav Vitek, Stanislav Zvanovec, Zabih Ghassemlooy, Sujan Rajbhandari

Author Affiliations +

Optical Engineering, Vol. 56, Issue 11, 116116 (November 2017). https://doi.org/10.1117/1.OE.56.11.116116

Abstract

We analyze the channel properties of a nonline-of-sight (NLOS) ceiling-to-device and device-to-device visible light communication systems by considering various receivers' orientation and variable fields of view (FOVs). Analyses based on the recursive indoor channel model show that for a particular transmitter configuration, the pure NLOS path can offer higher 3-dB channel bandwidth (up to 14 MHz) compared with the link with LOS and NLOS components. We also show how the receiver rotation (orientation) influences the probability of receiving signals via the NLOS path compared with the LOS and NLOS paths. Moreover, based on the experimental campaign, we demonstrate that shadowing observed at the receiver due to people’s movement results in decreased received power level (up to 1.8 dB), thus resulting in reshaping of the probability density function of received power.

Citation Download Citation

Petr Chvojka, Stanislav Vitek, Stanislav Zvanovec, Zabih Ghassemlooy, and Sujan Rajbhandari "Analysis of nonline-of-sight visible light communications," Optical Engineering 56(11), 116116 (30 November 2017). https://doi.org/10.1117/1.OE.56.11.116116

Received: 28 June 2017; Accepted: 13 November 2017; Published: 30 November 2017

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