A High-Efficiency High Power Driver Circuit for Joint Illumination and Communication System With Phase Shift Pre-Emphasis Technology
| Autor: | Wang Xiuyu, Sheng Xie, Hongda Chen, Xu Zhang, Xurui Mao, Jiling Tang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
General Computer Science
Computer science Gallium nitride 02 engineering and technology Communications system Driver circuit law.invention chemistry.chemical_compound phase shift 020210 optoelectronics & photonics Baud law 0202 electrical engineering electronic engineering information engineering Figure of merit General Materials Science push-pull driver Joint illumination and communication (JIC) business.industry Bandwidth (signal processing) General Engineering Electrical engineering pre-emphasis 020206 networking & telecommunications high power high efficiency chemistry Field-effect transistor lcsh:Electrical engineering. Electronics. Nuclear engineering Transceiver business lcsh:TK1-9971 Voltage Data transmission Light-emitting diode |
| Zdroj: | IEEE Access, Vol 9, Pp 6325-6333 (2021) |
| ISSN: | 2169-3536 |
| Popis: | This paper presents an improved white light-emitting-diode (LED) wireless transmitter for the Joint Illumination and Communication (JIC) System, which consists of two parts: the driver circuit and the pre-emphasis circuit. The main purpose of the driver circuit part is to solve the problem of dissipated power when sweeping the remaining carriers during the signal modulation of the high-efficiency, high-power and high-speed white LED driver. A push-pull structure driver with a current conduction angle less than 180 degrees is proposed, which is analogous to a Class C power amplification driver, thus avoiding the simultaneous existence of voltage and current on the driver circuit when the remaining carriers are swept out, and improves the efficiency of the LED driver. On this basis, the pre-emphasis circuit part adopts the phase shift technology to improve the data transmission rate, and the system efficiency has also been improved. Then, an improved class C push-pull structure white LED driver with phase shift pre-emphasis technology is formed. This novel driver and pre-emphasis technology achieve a system efficiency of 95.73% with a 10 W LED. The test results show that the system communication -3 dB bandwidth expanded from the original 8.3 MHz to 13.67 MHz, and the best-obtained transceiver baud rate is 25 Mbps at a distance of 1.3 m with BER of 1.63 × 10-4. The test result verifies that the LED driver proposed in this paper is currently the highest figure of merit (FoM) for high power JIC systems. |
| Databáze: | OpenAIRE |
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