Verbesserte Signaldetektion zur Verzerrungsabschwächung in optischen Übertragungssystemen

Details

Veröffentlichungs-Nr.

EP2495921

Aktenzeichen

EP11290109

Anmeldetag

28. Februar 2011

Veröffentlichung

20. Dezember 2017

Erteilung

20. Dezember 2017

Rechtsraum

EP

IPC

H04L25/03

Abstract

The present document relates to optical transmission systems. In particular, the present document relates to a system and method for detecting symbols at an optical receiver from an optical signal which has been submitted to distortion in an optical transmission medium. A detection unit (300) configured to detect a symbol from a received digital signal is described, wherein the digital signal has been derived from an optical signal transmitted over a first optical transmitted channel and submitted to noise. The detection unit (300) comprises a noise whitening filter unit (301), configured to filter the received digital signal using a noise whitening filter, wherein the noise whitening filter is configured to whiten the noise, and wherein the noise whitening filter is based on an estimate of a power spectral density of the noise; and a maximum likelihood sequence detector (306), referred to as MLSE detector, downstream of the noise whitening filter unit (301); wherein the MLSE detector (306) is configured to detect the symbol from the filtered digital signal at a given time instant, while taking into account one or more symbols of one or more previous time instants.

Anmelder

Firmen

Alcatel Lucent
ALCATEL LUCENT

Land

🇫🇷 Frankreich

Fachgebiete