40 citations · 114 across the 22 of their papers we have counts for
12 papers · 1 filter
Stochastic phenomena in a fiber Raman amplifier
Vladimir Kalashnikov, Sergey V. Sergeyev, Juan Diego Ania-Castanón +2
The interplay of such cornerstones of modern nonlinear fiber optics as a nonlinearity, stochasticity and polarization leads to variety of the noise induced instabilities including…
Analytical Investigations on Carrier Phase Recovery in Dispersion-Unmanaged n-PSK Coherent Optical Communication Systems
Tianhua Xu, Gunnar Jacobsen, Sergei Popov +4
Using coherent optical detection and digital signal processing, laser phase noise and equalization enhanced phase noise can be effectively mitigated using the feed-forward and feed…
Analytical Estimation in Differential Optical Transmission Systems Influenced by Equalization Enhanced Phase Noise
Tianhua Xu, Gunnar Jacobsen, Sergei Popov +3
An analytical model is presented for assessing the performance of the bit-error-rate (BER) in the differential m-level phase shift keying (m-PSK) transmission systems, where the in…
Phase Noise Influence in Long-range Coherent Optical OFDM Systems with Delay Detection, IFFT Multiplexing and FFT Demodulation
Gunnar Jacobsen, Tianhua Xu, Sergei Popov +2
We present a study of the influence of dispersion induced phase noise for CO-OFDM systems using FFT multiplexing/IFFT demultiplexing techniques (software based). The software based…
Phase Noise Influence in Optical OFDM Systems employing RF Pilot Tone for Phase Noise Cancellation
Gunnar Jacobsen, Leonid G. Kazovsky, Tianhua Xu +4
For coherent and direct-detection Orthogonal Frequency Division Multiplexed (OFDM) systems employing radio frequency (RF) pilot tone phase noise cancellation the influence of laser…
Influence of Pre- and Post-compensation of Chromatic Dispersion on Equalization Enhanced Phase Noise in Coherent Multilevel Systems
Gunnar Jacobsen, Marisol Lidón, Tianhua Xu +3
In this paper we present a comparative study in order to specify the influence of equalization enhanced phase noise (EEPN) for pre- and post-compensation of chromatic dispersion in…
Phase Noise Influence in Coherent Optical OFDM Systems with RF Pilot Tone: Digital IFFT Multiplexing and FFT Demodulation
Gunnar Jacobsen, Tianhua Xu, Sergei Popov +3
We present a comparative study of the influence of dispersion induced phase noise for CO-OFDM systems using Tx channel multiplexing and Rx matched filter (analogue hardware based);…
Analysis of chromatic dispersion compensation and carrier phase recovery in long-haul optical transmission system influenced by equalization enhanced phase noise
Tianhua Xu, Gunnar Jacobsen, Sergei Popov +5
The performance of long-haul coherent optical fiber transmission system is significantly affected by the equalization enhanced phase noise (EEPN), due to the interaction between th…
Digital Adaptive Carrier Phase Estimation in Multi-Level Phase Shift Keying Coherent Optical Communication Systems
Tianhua Xu, Tiegen Liu, Yimo Zhang +3
The analysis of adaptive carrier phase estimation is investigated in long-haul high speed n-level phase shift keying (n-PSK) optical fiber communication systems based on the one-ta…
Frequency-Domain Chromatic Dispersion Equalization Using Overlap-Add Methods in Coherent Optical System
Tianhua Xu, Gunnar Jacobsen, Sergei Popov +7
The frequency domain equalizers (FDEs) employing two types of overlap-add zero-padding (OLA-ZP) methods are applied to compensate the chromatic dispersion in a 112-Gbit/s non-retur…
Carrier Phase Estimation in Dispersion-Unmanaged Optical Transmission Systems
Tianhua Xu, Polina Bayvel, Tiegen Liu +4
The study on carrier phase estimation (CPE) approaches, involving a one-tap normalized least-mean-square (NLMS) algorithm, a block-wise average algorithm, and a Viterbi-Viterbi alg…
Close-Form Expression of One-Tap Normalized LMS Carrier Phase Recovery in Optical Communication Systems
Tianhua Xu, Gunnar Jacobsen, Sergei Popov +3
The performance of long-haul high speed coherent optical fiber communication systems is significantly degraded by the laser phase noise and the equalization enhanced phase noise (E…