Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2306008(2021)
Pairwise Maximum Likelihood Receiver for Flip/Unipolar Orthogonal Frequency Division Multiplexing in Visible Light Communication
A pairwise maximum likelihood (ML) receiver is proposed for flip/unipolar orthogonal frequency division multiplexing (Flip/U-OFDM) system in visible light communication (VLC). Parts of Flip/U-OFDM signal are set at zero by pairwise ML in time domain, which can get some signal to noise ratio (SNR) gain. And the pairwise ML is a simple signal processing method, which will not increase the complexity for the receiver. Simulation results show that SNR gain of 2 dB can be available for the pairwise ML receiver in additive white Gaussian noise (AWGN) channel. SNR gain of 2 dB-3 dB will be achieved for the pairwise ML receiver in amplitude clipping channel and light emitting diode (LED) nonlinearity channel.
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Jianfeng Li, Xiaoshuang Liu, Yahao Ren, Zhitong Huang. Pairwise Maximum Likelihood Receiver for Flip/Unipolar Orthogonal Frequency Division Multiplexing in Visible Light Communication[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2306008
Category: Fiber Optics and Optical Communications
Received: May. 7, 2021
Accepted: May. 18, 2021
Published Online: Nov. 18, 2021
The Author Email: Liu Xiaoshuang (liuxiaoshuang55@126.com)