138 citations · 267 across the 14 of their papers we have counts for
14 papers
PDL Impact on Linearly Coded Digital Phase Conjugation Techniques in CO-OFDM Systems
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
We investigate the impact of polarization-dependent loss (PDL) on the linearly coded digital phase conjugation (DPC) techniques in coherent optical orthogonal frequency division mu…
Second-Order Perturbation Theory-Based Digital Predistortion for Fiber Nonlinearity Compensation
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
The first-order (FO) perturbation theory-based nonlinearity compensation (PB-NLC) technique has been widely investigated to combat the detrimental effects of the intra-channel Kerr…
A Spectrally Efficient Linear Polarization Coding Scheme for Fiber Nonlinearity Compensation in CO-OFDM Systems
O. S. Sunish Kumar, O. A. Dobre, R. Venkatesan +4
In this paper, we propose a linear polarization coding scheme (LPC) combined with the phase conjugated twin signals (PCTS) technique, referred to as LPC-PCTS, for fiber nonlinearit…
Intra-Channel Nonlinearity Compensation Based on Second-Order Perturbation Theory
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
The first-order (FO) perturbation theory has been widely investigated to design the digital nonlinearity compensation (NLC) technique to deal with the intra-channel fiber nonlinear…
Fiber Nonlinearity Mitigation via the Parzen Window Classifier for Dispersion Managed and Unmanaged Links
Abdelkerim Amari, Xiang Lin, Octavia A. Dobre +2
Machine learning techniques have recently received significant attention as promising approaches to deal with the optical channel impairments, and in particular, the nonlinear effe…
A Machine Learning-Based Detection Technique for Optical Fiber Nonlinearity Mitigation
Abdelkerim Amari, Xiang Lin, Octavia A. Dobre +2
We investigate the performance of a machine learning classification technique, called the Parzen window, to mitigate the fiber nonlinearity in the context of dispersion managed and…
Simple sampling clock synchronisation scheme for reduced-guard-interval coherent optical OFDM systems
Oluyemi Omomukuyo, Deyuan Chang, Octavia A. Dobre +2
A simple data-aided scheme for sampling clock synchronisation in reduced-guard-interval coherent optical orthogonal frequency division multiplexing (RGI-CO-OFDM) systems is propose…
Joint timing and frequency synchronization based on weighted CAZAC sequences for reduced-guard-interval CO-OFDM systems
Oluyemi Omomukuyo, Deyuan Chang, Jingwen Zhu +4
A novel joint symbol timing and carrier frequency offset (CFO) estimation algorithm is proposed for reduced-guard-interval coherent optical orthogonal frequency-division multiplexi…
Robust Frame and Frequency Synchronization Based on Alamouti Coding for RGI-CO-OFDM
Oluyemi Omomukuyo, Deyuan Chang, Octavia Dobre +2
We propose an algorithm for carrying out joint frame and frequency synchronization in reduced-guard-interval coherent optical orthogonal frequency division multiplexing (RGI-CO-OFD…
Bandwidth-Efficient Synchronization for Fiber Optic Transmission: System Performance Measurements
Oluyemi Omomukuyo, Octavia A. Dobre, Ramachandran Venkatesan +1
In this article, we first provide a brief overview of optical transmission systems and some of their performance specifications. We then present a simple, robust, and bandwidth-eff…
Discrete FRFT-Based Frame and Frequency Synchronization for Coherent Optical Systems
Oluyemi Omomukuyo, Shu Zhang, Octavia Dobre +2
A joint frame and carrier frequency synchronization algorithm for coherent optical systems, based on the digital computation of the fractional Fourier transform (FRFT), is proposed…
Robust Faster-than-Nyquist PDM-mQAM Systems with Tomlinson-Harashima Precoding
Deyuan Chang, Oluyemi Omomukuyo, Xiang Lin +3
A training-based channel estimation algorithm is proposed for the faster-than-Nyquist PDM-mQAM (m = 4, 16, 64) systems with Tomlinson-Harashima precoding (THP). This is robust to t…
Training Symbol-Based Equalization for Quadrature Duobinary PDM-FTN Systems
S. Zhang, D. Chang, O. A. Dobre +3
A training symbol-based equalization algorithm is proposed for polarization de-multiplexing in quadrature duobinary (QDB) modulated polarization division multiplexedfaster-than-Nyq…
A survey on fiber nonlinearity compensation for 400 Gbps and beyond optical communication systems
Abdelkerim Amari, Octavia A. Dobre, Ramachandran Venkatesan +3
Optical communication systems represent the backbone of modern communication networks. Since their deployment, different fiber technologies have been used to deal with optical fibe…