研究目的
To propose and demonstrate a 96 Mbit/s real-time OFDM-VLC system at the distance of 2 m utilizing a single InGaN/GaN MQWs LED, with BER analysis.
研究成果
A 96 Mbit/s real-time OFDM-VLC system at the distance of 2 m utilizing a single InGaN/GaN MQWs LED is demonstrated, with BER below the FEC limit. The system's performance can be further improved by focusing on the LED bandwidth and SNR of the photoelectric conversion.
研究不足
The system performance is curbed by the bandwidth of the LED and the SNR of the photoelectric conversion. Further improvement of data rate can concentrate on these two parts.
1：Experimental Design and Method Selection:
The system employs OFDM to ensure the LED bandwidth is fully used, designed and implemented on a field-programmable gate array platform for real-time communication.
2：Sample Selection and Data Sources:
Uses a single InGaN/GaN MQWs LED as the transmitting device.
3：List of Experimental Equipment and Materials:
Includes FPGA (EP4CE30F23C7), DAC (AD9748), ADC (ADC08200), and APD for photoelectric conversion.
4：Experimental Procedures and Operational Workflow:
Binary input data is generated by PRBS-7, QAM mapping is applied, and OFDM signal is processed through IFFT, cyclic prefix addition, DAC conversion, pre-emphasis, amplification, and LED modulation.
5：Data Analysis Methods:
BER testing is executed in Rx-FPGA, comparing recovered data with input data.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
