This paper presents the design, implementation, and experimental validation of a high-speed visible light communication (VLC) transmitter based entirely on cost-effective, commercially available components. The main objective is to demonstrate gigabit-class data transmission using standard white LEDs originally intended for general illumination, while simultaneously maintaining practical indoor lighting conditions. To achieve this, a custom high-speed LED driver is developed, featuring a closed-loop proportional–derivative (PD) control architecture that enables precise and dynamic regulation of the LED forward current. This ensures accurate reproduction of high-frequency electrical transitions, minimizes waveform distortion, overshoot, and intersymbol interference, and enables sub-nanosecond rise and fall times. On–Off Keying (OOK) modulation is used for data transmission, while the feedback control maintains stable luminance for consistent indoor illumination. Experimental validation demonstrates reliable operation at 0.5 Gbps and 1 Gbps within a 1m-radius indoor cell, achieving average bit error rates of and , respectively. In addition, the measured end-to-end frequency response of the system, including the driver, LED array, optical channel, and photodetector, indicates a −3 dB bandwidth of approximately 300 MHz, supporting the observed gigabit-class performance. These results confirm that standard illumination-grade LEDs, when combined with a carefully designed high-speed driver, can provide both high-speed optical communication and practical indoor lighting. Overall, the proposed system offers a scalable and feasible solution for integrating VLC into standard lighting infrastructure. It achieves a unique balance between high-speed data transmission and real-world illumination requirements, demonstrating the practicality of gigabit-class VLC using commercially available components for indoor applications.
扫码关注我们
求助内容:
应助结果提醒方式:
