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Characterization, measurement and specification of device imperfections in optical coherent transceivers
Transceiver imperfections become the primary source of impairment as baud rate and
modulation order grow in advanced optical coherent communications. Thus, transceiver …
modulation order grow in advanced optical coherent communications. Thus, transceiver …
800-Gb/s/carrier WDM coherent transmission over 2000 km based on truncated PS-64QAM utilizing MIMO Volterra equalizer
We provided a feasible solution for 800-Gb/s per carrier long-distance wavelength division
multiplexing (WDM) coherent optical fibre transmission based on offline DSP. We …
multiplexing (WDM) coherent optical fibre transmission based on offline DSP. We …
Learnable digital signal processing: a new benchmark of linearity compensation for optical fiber communications
Z Niu, H Yang, L Li, M Shi, G Xu, W Hu… - Light: Science & …, 2024 - nature.com
The surge in interest regarding the next generation of optical fiber transmission has
stimulated the development of digital signal processing (DSP) schemes that are highly cost …
stimulated the development of digital signal processing (DSP) schemes that are highly cost …
Transceiver imbalances compensation and monitoring by receiver DSP
In-phase and quadrature (IQ) imbalances in optical transceiver, such as amplitude
imbalance, phase imbalance, and IQ skew, can cause serious system performance …
imbalance, phase imbalance, and IQ skew, can cause serious system performance …
Analysis and experimental demonstration of orthant-symmetric four-dimensional 7 bit/4D-sym modulation for optical fiber communication
We propose a new four-dimensional orthant-symmetric 128-ary modulation format (4D-
OS128) with a spectral efficiency of 7 bit/4D-sym. The proposed format fills the gap between …
OS128) with a spectral efficiency of 7 bit/4D-sym. The proposed format fills the gap between …
Algorithms for blind separation and estimation of transmitter and receiver IQ imbalances
We propose a blind transmitter (Tx) and receiver (Rx) in-phase/quadrature (IQ) amplitude
and phase imbalances estimation scheme based on a combination of analytical modeling …
and phase imbalances estimation scheme based on a combination of analytical modeling …
Hardware-efficient and robust DSP scheme for coherent DSCM system in presence of transmitter IQ impairments
A hardware-efficient and robust DSP scheme for the coherent digital subcarrier multiplexing
(DSCM) system in presence of transmitter (Tx) in-phase/quadrature (IQ) impairments is …
(DSCM) system in presence of transmitter (Tx) in-phase/quadrature (IQ) impairments is …
Multi-dimensional, wide-range, and modulation-format-transparent transceiver imbalance monitoring
We propose and experimentally demonstrate a dual-polarization (DP) transceiver imbalance
monitoring scheme, which is applicable for the coherent system using square QAM signals …
monitoring scheme, which is applicable for the coherent system using square QAM signals …
Carrier recovery for satellite-to-ground coherent laser communication systems using double feedback loop and Viterbi–Viterbi feedforward cascade structure
N Liu, C Ju, D Wang, X Zhang, C Li - Optics Communications, 2023 - Elsevier
High dynamic and wide range frequency offset in satellite-to-ground coherent optical
communication system caused by Doppler frequency shift, transceiver laser frequency offset …
communication system caused by Doppler frequency shift, transceiver laser frequency offset …
Mode-dependent loss and gain estimation in SDM transmission based on MMSE equalizers
The capacity in space division multiplexing (SDM) systems with coupled channels is
fundamentally limited by mode-dependent loss (MDL) and mode-dependent gain (MDG) …
fundamentally limited by mode-dependent loss (MDL) and mode-dependent gain (MDG) …