Creating and sharing knowledge for telecommunications

Project: Physical Impairment Modelling in Flexible Optical Node Architectures

Acronym: ImpAr
Main Objective:
One major goal in this project is to develop an analytical formulation,as well as a stochastic Monte-Carlo (MC) simulator, that allow us to study in a rigorous way the impact of in-band crosstalk, both incoherent and coherent, originated in CDC ROADMs in the performance of flexible grid networks, considering 16-QAM and 64-QAM 400 Gbps signals.

On a network-side perspective, the emergence of modulation formats with higher-order constellations and, consequently, with stricter performance margins has
increased the importance of physical impairment awareness in the network planning process. Thus, it is essential to incorporate the effects of in-band
crosstalk, along with other effects, in an impairment-aware routing and spectrum assignment (RSA) framework. This framework should be able to efficiently
provision paths and spectrum for superchannels based on M-QAM carriers in a CDC-ROADM network, while using the physical model as a performance validation
tool for candidate optical paths.
Reference: uid/50008
Funding: IT/LA
Start Date: 01-07-2016
End Date: 01-07-2018
Team: Luís Gonçalo Lecoq Vences e Costa Cancela, João Lopes Rebola, João José de Oliveira Pires, Rui Miguel Neto Marinheiro, José André Rocha Sá e Moura, António Miguel Barata da Eira, João Manuel Ferreira Pedro, Nelson Manuel Simões Costa
Groups: Optical Communication Systems and Networking – Lx, Radio Systems – Lx
Partners: Coriant Portugal
Local Coordinator: Luís Gonçalo Lecoq Vences e Costa Cancela

Associated Publications