Application Of An Infinite Gain Multiple Feedback Filter In Vlc Link Range Extension
2018 IEEE 2ND INTERNATIONAL CONFERENCE ON CIRCUITS, SYSTEM AND SIMULATION (ICCSS 2018)(2018)
Abstract
This paper presents a visible light communication (VLC) link range extension, achieved by establishing a VLC system using simple, low-cost, and reliable electronic circuitry, and employing a design of a highly resonant frequency selective active band pass filter (infinite gain multiple feedback filter) at the receiver section of the system. The filter was designed for a specific center (resonant) frequency with high Quality factor and gain. An outline of the relationship between Signal-to-Noise ratio (SNR) and transmission distance for three different center frequencies was presented. Results show that by utilizing an IGMF filter at the receiver, a signal-to-noise ratio above 10dB at a distance beyond 1.5 meters can be achieved without any form of lensing at either the transmitter or receiver.
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Key words
Visible Light Communications (VLC), Trans-Impedance Amplifier (TIA), Infinite Gain Multiple Feedback (IGMF), LED, Signal-to-Noise Ratio (SNR)
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