BER degradation detection and failure identification in elastic optical networks

AP Vela, M Ruiz, F Fresi, N Sambo, F Cugini… - Journal of lightwave …, 2017 - opg.optica.org
Optical connections support virtual links in MPLS-over-optical multilayer networks and
therefore, errors in the optical layer impact on the quality of the services deployed on such …

Joint equalization scheme of ultra-fast RSOP and large PMD compensation in presence of residual chromatic dispersion

W Yi, Z Zheng, N Cui, X Zhang, L Qiu, N Zhang, L Xi… - Optics express, 2019 - opg.optica.org
Polarization demultiplexing is generally carried out by a multiple-input multiple-output
(MIMO) based algorithm in polarization division multiplexing (PDM) coherent systems …

Real time low-complexity adaptive channel equalization for coherent optical transmission systems

X Zhang, X Li, T Zeng, L Meng, J Li, M Luo, F Jiang… - Optics …, 2020 - opg.optica.org
In this paper, a novel low-complexity adaptive channel equalization (ACE) algorithm for
digital coherent optical systems is proposed and experimentally demonstrated. We divide …

Training-aided frequency-domain channel estimation and equalization for single-carrier coherent optical transmission systems

F Pittala, I Slim, A Mezghani… - Journal of Lightwave …, 2014 - ieeexplore.ieee.org
Frequency-domain equalization supported by training-aided 2× 2 multi-input multi-output
channel estimation (CE) is proposed for coherent optical transmission systems. In particular …

Joint estimation of dynamic polarization and carrier phase with pilot-based adaptive equalizer in PDM-64 QAM transmission system

J Yang, E Sillekens, W Yi, P Bayvel, RI Killey - Optics Express, 2021 - opg.optica.org
A pilot-based adaptive equalizer is investigated for high cardinality polarization-division-
multiplexing quadrature amplitude modulation transmission systems. Pilot symbols are …

Kalman filter polarization demultiplexing algorithm based on diagonalized matrix treatment

Q Zhang, N Cui, X Li, X Zhang, L Xi - Optics express, 2022 - opg.optica.org
When we implement the equalizations of polarization effects using a Kalman filter (KF) in a
coherent optical fiber communication system, we will require to multiply many matrices. If the …

Joint equalization of linear impairments using two-stage cascade Kalman filter structure in coherent optical communication systems

N Zhang, W Yi, Z Zheng, N Cui, R Guo, L Qiu… - Optics …, 2019 - Elsevier
In this paper, instead of adopting different algorithms to deal with the different impairments
separately based on different signal processing structures, we proposed a joint linear …

[HTML][HTML] Modulation format identification of square and non-square M-QAM signals based on amplitude variance and OSNR

JW Kim, CH Lee - Optics Communications, 2020 - Elsevier
Blind modulation format identification (MFI) is essential in an elastic optical network (EON)
due to unknown modulation format of the received signals. We propose an MFI method for …

Assessment of novel regenerator assignment strategies in dynamic translucent elastic optical networks

EF da Silva, RC Almeida, HA Pereira… - Photonic Network …, 2020 - Springer
The problem of regenerator assignment (RA) in translucent optical networks consists in
segmenting a lightpath into several transparent segments, each of which linked by 3 R …

Experimental investigation on low-complexity adaptive equalizer including RSOP tracking and phase recovery for 112 Gb/s PDM-QPSK transmission system

P Yi, D Li, H Song, M Cheng, D Liu… - IEEE Photonics …, 2021 - ieeexplore.ieee.org
A low-complexity adaptive equalizer including equalization, rotation of state of polarization
(RSOP) tracking, and phase recovery is proposed for coherent optical polarization-division …