Transmission Line Synthesis Approach to Extending the Bandwidth of LEDs for Visible Light Communication
| Autor: | Izzat Darwazeh, Paul Anthony Haigh, Temitope Odedeyi |
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| Rok vydání: | 2018 |
| Předmět: |
Computer science
Bandwidth (signal processing) Visible light communication Bandwidth extension 020206 networking & telecommunications 02 engineering and technology Diffusion capacitance law.invention 020210 optoelectronics & photonics Transmission line law 0202 electrical engineering electronic engineering information engineering Electronic engineering Diode Electronic circuit Light-emitting diode |
| Zdroj: | CSNDSP |
| Popis: | This paper proposes, for the first time, a transmission line synthesis approach to extending the bandwidth of light- emitting diodes (LEDs) in the context of high capacity visible light communications links. As opposed to the more traditional pre-distortion, amplitude equalisation or driver circuitry based approaches, the extension in bandwidth is achieved by incorporating the LED diffusion capacitance into a pseudo-artificial transmission line (p-ATL) cell with significantly improved transmission and cut-off properties. With the proposed technique, we show the possibility of achieving close to 400% improvement in bandwidth with studies based on a verified LED equivalent model. It is envisaged that the proposed approach will enable bespoke driver circuits based on the individual characteristics of LEDs, while combination with existing bandwidth extension schemes can lead to further improvement. |
| Databáze: | OpenAIRE |
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