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Optimization of Multi-Carrier Modulation Techniques for Spectral Efficient Transmission Under Strong Optical Filtering

Ann Margareth Rosa Brusin

Optimization of Multi-Carrier Modulation Techniques for Spectral Efficient Transmission Under Strong Optical Filtering.

Rel. Andrea Carena. Politecnico di Torino, Corso di laurea magistrale in Communications And Computer Networks Engineering (Ingegneria Telematica E Delle Comunicazioni), 2018

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Abstract:

Optimization of Multi-Carrier Modulation Techniques for Spectral Efficient Transmission Under Strong Optical Filtering. By exploiting and optimizing the concept of multi-carrier modulation technique, it is possible to reduce the impact of cascaded ROADMs on subcarrier multiplexing, which consists in strong optical filtering effects on the trasmitted signal. This thesis shows that by optimizing the number of subcarriers and by using Frequency Domain Hybrid Modulation Formats (FDHMFs) , i.e. assigning a different 2^N-QAM (N integer) modulation format to each subcarrier, and some more advanced techniques, like offline bit and/or power loading, these filtering effects can be efficiently predicted and near-optimally counteracted. Considering a rate constraint of 200G and up to 7 cascaded ROADMs, the obtained simulation results have been validated through experimental measurements.

Relators: Andrea Carena
Academic year: 2018/19
Publication type: Electronic
Number of Pages: 96
Subjects:
Corso di laurea: Corso di laurea magistrale in Communications And Computer Networks Engineering (Ingegneria Telematica E Delle Comunicazioni)
Classe di laurea: New organization > Master science > LM-27 - TELECOMMUNICATIONS ENGINEERING
Ente in cotutela: IT - Aveiro, Instituto de Telecomunicações, Campus Universitário de Santiago (PORTOGALLO)
Aziende collaboratrici: Instituto de Telecomunicaçoes
URI: http://webthesis.biblio.polito.it/id/eprint/8987
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