Visible Light Communication (VLC) is challenged by two main drawbacks: ambient light interference and the transmission range. To overcome these drawbacks, we propose an On Off Keying (OOK) based tuned VLC Analog Front-End (AFE) using simple and low-cost electronic circuity. The proposed VLC receiver architecture consists of a Transimpedance amplifier and a fourth order Multiple Feed Back (MFB) band pass filter. The filter is designed with high gain and high-quality factor (Q) for a specified center (resonant) frequency. The system performance was measured in terms of Signal to Noise Ratio (SNR) at two different resonant frequencies. Experimental results show that the proposed VLC front-end is able to extend the transmission range from 60cm to 2.2 m without any form of lensing at either transmitter or receiver. The receiver also showed robustness against ambient light interference. A data rate of 20kbps over a distance of 1.8 m with a bit error rate (BER)
| Date of Award | 25 Mar 2019 |
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| Original language | English |
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| Supervisor | Martin Sibley (Main Supervisor) & Peter Mather (Co-Supervisor) |
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