Blind transmitter IQ imbalance compensation in M-QAM optical coherent systems

Abstract : We investigate transmitter (Tx) IQ imbalance compensation based on the blind adaptive source separation (BASS) method in a dual polarization M−QAM optical coherent system. The robustness of the BASS method against the residual carrier frequency offset (CFO) is numerically investigated and compared to that of the Gram- Schmidt orthogonalization procedure (GSOP). We further validate experimentally the proposed method with 10−Gbaud optical 4−QAM and 16−QAM signals at 30° and 10° phase imbalance, respectively, with simulated impairments. More specifically, in the presence of 5×10−6 residual CFO (normalized to the sample rate), the optical signal-to-noise ratio (OSNR) penalty reduction of the BASS method compared to the GSOP method is 1 dB for 4−QAM at a bit-errorratio (BER) of 2×10−3 and 2 dB for 16−QAM at a BER of 10−3. In contrast to the GSOP that requires an independent block, the BASS method can be integrated into an equalizer, simplifying the operation and allowing parallel implementation.
Type de document :
Article dans une revue
Journal of optical communications and networking, Piscataway, NJ ; Washington, DC : IEEE : Optical Society of America, 2017, Special Issue on IEEE ICC 2016 ONS Symposium and OWC Workshop, 9 (9), pp.D42-D50. 〈https://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-9-9-D42〉. 〈10.1364/JOCN.9.000D42〉
Liste complète des métadonnées

Littérature citée [22 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01573632
Contributeur : Christophe Peucheret <>
Soumis le : jeudi 10 août 2017 - 11:02:24
Dernière modification le : jeudi 15 novembre 2018 - 11:59:01

Fichier

Nguyen_jocn_17_revised.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Trung Hien Nguyen, Pascal Scalart, Mathilde Gay, Laurent Bramerie, Olivier Sentieys, et al.. Blind transmitter IQ imbalance compensation in M-QAM optical coherent systems. Journal of optical communications and networking, Piscataway, NJ ; Washington, DC : IEEE : Optical Society of America, 2017, Special Issue on IEEE ICC 2016 ONS Symposium and OWC Workshop, 9 (9), pp.D42-D50. 〈https://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-9-9-D42〉. 〈10.1364/JOCN.9.000D42〉. 〈hal-01573632〉

Partager

Métriques

Consultations de la notice

1558

Téléchargements de fichiers

330