Data pattern dependent distortion compensation in a coherent...

H - Electricity – 04 – B

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H04B 10/18 (2006.01) H04B 10/148 (2006.01) H04L 1/00 (2006.01) H04L 27/18 (2006.01)

Patent

CA 2754865

A distortion compensation system and method may be used to compensate for data pattern dependent signal distortion in a signal received in a coherent optical signal receiver. In general, the distortion compensation system and method compares a received signal field with stored distorted signal waveforms associated with known data patterns and selects a compensation value associated with the distorted signal waveform that corresponds most closely with the received signal field. The distortion compensation system and method compensates the received signal using the selected compensation value and thus mitigates the effects of data pattern dependent signal distortion.

L'invention concerne un système et un procédé de compensation de distorsion pouvant servir à compenser une distorsion du signal dépendant d'un motif de données dans un récepteur de signal optique cohérent. De manière générale, le système et le procédé de l'invention comportent les étapes consistant à: comparer un champ de signal reçu avec des formes d'ondes de signal déformé stockées, associées à des motifs de données connus; et sélectionner une valeur de compensation associée à la forme d'onde de signal déformé qui correspond le plus fidèlement au champ du signal reçu. Le système et le procédé de compensation de distorsion compensent le signal reçu à l'aide de la valeur de compensation sélectionnée, et permettent ainsi d'atténuer les effets de distorsion du signal dépendant d'un motif de données.

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