| 摘要 |
<p>The invention relates to a method (100) for estimating a chromatic dispersion of a received optical signal (Rx(f)), the method (100) comprising: scanning (101) the received optical signal (Rx(f)) through a number (M) of chromatic dispersion compensation filters in a chromatic dispersion filter range (Dmin... Dmax) between a first chromatic dispersion value (Dmin) and a second chromatic dispersion value (Dmax) with a resolution (DeltaD) determined by the chromatic dispersion filter range (Dmin... Dmax) normalized by the number (M) of chromatic dispersion compensation filters to obtain filtered samples (Rx, D(f)) of the received optical signal (Rx(f)); and determining (103) a correlation function (CD(tau, B)) indicating an estimate of the chromatic dispersion by correlating the filtered samples (Rx, D(f) of the received optical signal (Rx(f)) with respect to frequency shifts (tau) over a correlation bandwidth (B), wherein the correlation bandwidth (B), the chromatic dispersion filter range (Dmin... Dmax) and the resolution (DeltaD) are iteratively adapted according to an optimization criterion.</p> |
