Yueming Lu

Low-PAPR Layered/Enhanced ACO-SCFDM for Optical-Wireless Communications

In this letter, we propose layered/enhanced asymmetrically clipped optical single-carrier frequency-division multiplexing (L/E-ACO-SCFDM) for optical-wireless communications. L/E-ACO-SCFDM has a lower computational complexity and peak-to-average power ratio (PAPR) than L/E-ACO orthogonal frequency-division multiplexing (L/E-ACO-OFDM). The computational complexity of the simplified transmitter in L/E-ACO-SCFDM with <inline-formula> <tex-math notation=LaTeX>

Joint OSNR and Interchannel Nonlinearity Estimation Method Based on Fractional Fourier Transform

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A novel method for chromatic dispersion estimation with lower computation complexity in fractional domain

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Performance Enhancement Scheme for Mobile-Phone Based VLC Using Moving Exponent Average Algorithm

(2-2/2^{R})O(N)

An improved diversity combining receiver for layered ACO-FOFDM in IM/DD systems

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Chromatic dispersion estimation based on heterodyne detection for coherent optical communication systems

(2-2/2^{R})O(Ntext {log}_{2}N)

Circle-16QAM for a zero-guard-interval CO-OFDM system

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Simplified Maximum Likelihood Detection for FTN Non-Orthogonal FDM System

10^{-3}

40-Gb/s PAM4 with low-complexity equalizers for next-generation PON systems

</tex-math></inline-formula>, the PAPR of L/E-ACO-SCFDM is approximately 4.2, 3.4, and 2.7 dB lower than that of L/E-ACO-OFDM for 2, 3, and 4 layers, respectively. The simulation results indicate that L/E-ACO-SCFDM has better performance than L/E-ACO-OFDM under the transmitter nonlinearity and multipath fading.

Nonlinearity-tolerant OSNR estimation method based on correlation function and statistical moments

We propose a novel joint optical signal noise ratio (OSNR) and interchannel nonlinearity (NL) estimation method by fractional Fourier transformation of linear-frequency modulation (LFM) signal. In our method, LFM signal acts as time domain pilot in front of the payload. Our method of OSNR estimation is insensitive to nonlinear noise of optical fiber. Lower OSNR estimation error is also achieved in comparison with differential pilot method. The interchannel NL measurement procedures are also simplified compared with previous work. We also provide a scientific way to calculate the reference interchannel NL. The interchannel NL estimation error of our method is lower than 1 dB for 9 channels transmission after 10 spans with launch power from 10 to 14 dBm.