Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link
<p>Block diagram of the proposed experimental setup.</p> "> Figure 2
<p>Transimpedance amplifier (TIA) circuit diagram.</p> "> Figure 3
<p>Characteristics of a light emitting diode (LED) photodetector: (<b>a</b>) received signal energy decay with increasing distance; (<b>b</b>) histogram of LED photodetector noise signal and its fitting to a Gaussian function.</p> "> Figure 4
<p>Bode plot of TIA receiver circuit.</p> "> Figure 5
<p>Eye diagram (inset) and signal constellation in (<b>a</b>) back-to-back configuration and (<b>b</b>) at 10 cm distance.</p> "> Figure 6
<p>(<b>a</b>) Comparison between the measured and calculated BER; (<b>b</b>) BER and SNR at different distances and data rates.</p> "> Figure 7
<p>Images of the active areas of (<b>a</b>) single-colour (red) LED and (<b>b</b>) red sub-LED of RGB LED when seen under the microscope at the same scale.</p> "> Figure 8
<p>Block diagram of a digital communication system.</p> "> Figure 9
<p>Effect of the matched filter on improving the system performance regarding (<b>a</b>) the bit error rate (BER) at different distances and (<b>b</b>) the maximum error-free transmission distance.</p> ">
Abstract
:1. Introduction
2. Experimental Setup
3. Results and Analysis
3.1. Response of RGB LED Photodetector
3.2. LED Photodetector Noise Measurement
3.3. Bandwidth of the LED Receiver Circuit
3.4. BER Improvement with Matched Filter
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Galal, M.; Ng, W.P.; Binns, R.; Abd El Aziz, A. Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link. Sensors 2020, 20, 5754. https://doi.org/10.3390/s20205754
Galal M, Ng WP, Binns R, Abd El Aziz A. Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link. Sensors. 2020; 20(20):5754. https://doi.org/10.3390/s20205754
Chicago/Turabian StyleGalal, Mariam, Wai Pang Ng, Richard Binns, and Ahmed Abd El Aziz. 2020. "Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link" Sensors 20, no. 20: 5754. https://doi.org/10.3390/s20205754