Chinese Optics Letters, 2015, 13 (7): 072302, Published Online: Sep. 14, 2018
Adaptive frequency domain pre-equalization for white-LED nonlinearity in OFDM-based visible light communication systems Download: 885次
230.4320 Nonlinear optical devices 230.3670 Light-emitting diodes 060.0060 Fiber optics and optical communications
Abstract
In visible light communication, orthogonal frequency division multiplexing (OFDM) is an effective approach to improve the system speed. However, the nonlinearity of the light-emitting diode (LED) suppresses the transmission performance. The low-frequency part of the transmitted signal from LED suffers more from nonlinearity. Therefore, a pre-equalization scheme which suppresses the low frequency part of the OFDM signal and enhances the high frequency part can decrease the impact of LED nonlinearity. The experimental results show that the bit-error rate performance is largely enhanced by the pre-compensation.
Ruqi Zhang, Jianfeng Li, Zhitong Huang, Yuefeng Ji. Adaptive frequency domain pre-equalization for white-LED nonlinearity in OFDM-based visible light communication systems[J]. Chinese Optics Letters, 2015, 13(7): 072302.