The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
May. 17, 2013
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Fabian Nikolaus Hauske, Munich, DE;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
The present disclosure relates to a method for estimating chromatic dispersion of a received optical signal (R(f)), the method comprising: scanning the received optical signal (R(f)) through a number (M) of chromatic dispersion compensation filters in a chromatic dispersion filter range (D. . . D) between a first chromatic dispersion value (D) and a second chromatic dispersion value (D) with a resolution (ΔD) determined by the chromatic dispersion filter range (D. . . D) normalized by the number (M) of chromatic dispersion compensation filters to obtain filtered samples (R(f)) of the received optical signal (R(f)); and determining a correlation function (C(τ,B)) indicating an estimate of the chromatic dispersion by correlating the filtered samples (R(f)) of the received optical signal (R(f)) with respect to frequency shifts (τ) over a correlation bandwidth (B), wherein the correlation bandwidth (B), the chromatic dispersion filter range (D. . . D) and the resolution (ΔD) are iteratively adapted according to an optimization criterion.
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