The fractional Fourier transform (FRFT), which is a family of linear transformations
generalizing the classical Fourier transform, has been used in the fields of filter design …

Due to the non-rectangular distribution of the constellation points, traditional fast Fourier
transform based frequency offset estimation (FFT-FOE) is no longer suitable for 32-QAM …

A joint timing offset (TO) and frequency offset (FO) estimation algorithm is proposed for
polarization division multiplexing (PDM) coherent optical orthogonal frequency-division …

We propose a fast and blind chromatic dispersion (CD) estimation method by one sample
per symbol after coherent detection. The CD estimation process is non-data aided, without …

Abstract The fractional Fourier transform (FrFT) is a major tool in signal and image
processing. Since its computation for analog signals includes the evaluation of improper …

To comprehensively assess the conditions of an optical fiber communication system, it is
essential to implement joint estimation of the following four critical impairments: nonlinear …

We propose a novel chromatic dispersion (CD) estimation method by fractional Fourier
transformation of linear-frequency modulation (LFM) signals. This method can measure …

Conference title, upper and lower case, bolded, 18 point type, centered Page 1 FrFT Based
Joint Time/Frequency Synchronization for Digital Subcarrier Multiplexing System Zihe Hu, Li …

Faster-than-Nyquist (FTN) coherent optical transmission technology is considered to be an
outstanding solution to achieve higher spectral efficiency (SE), larger capacity, and greater …

We present a novel method to estimate chromatic dispersion with ultra-low sampling rate
based on training sequence. The under-sampling can be equivalent to over-sampling by …