par Nguyen, Trung-Hien 
;Scalart, Pascal;Gay, Mathilde;Bramerie, Laurent;Sentieys, Olivier;Simon, Jean-Claude;Peucheret, Christophe;Joindot, Michel
Référence I E E E / O S A Journal of Optical Communications and Networking, 9, 9, page (D42-D50), 8047678
Publication Publié, 2017-09
;Scalart, Pascal;Gay, Mathilde;Bramerie, Laurent;Sentieys, Olivier;Simon, Jean-Claude;Peucheret, Christophe;Joindot, MichelRéférence I E E E / O S A Journal of Optical Communications and Networking, 9, 9, page (D42-D50), 8047678
Publication Publié, 2017-09
Article révisé par les pairs
| Résumé : | We investigate transmitter 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 or-thogonalization 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 χ 10-6 residual CFO (normalized to the sample rate), the optical signal-to-noise ratio penalty reduction of the BASS method compared to the GSOP method is 1 dB for 4-QAM at a bit error ratio (BER) of 2 χ 10-3 and 2 dB for 16-QAM at a BER of 10-3. In contrast to the GSOP, which requires an independent block, the BASS method can be integrated into an equalizer, simplifying the operation and allowing parallel implementation. |
