Patent ID: 8750363
Filing Date: 2014-06-10
Classification: H04L

Abstract:
1. A method comprising: retrieving from a computer readable memory a test signal; measuring a response of a device to the test signal to generate a measured signal; operating a processor to apply an initial weighting to at least a given frequency component of the measured signal and at least said given frequency component of the test signal; and operating a processor to iteratively perform the operations of constructing an equalizer based on the weighted signals, testing the performance of the equalizer on the measured signal, and adjusting weighting applied to the measured signal and the test signal, wherein: the test signal comprises a plurality of frequency sub-bands within a frequency band, the measured signal comprises values representing a measurement on each of the plurality of frequency sub-bands, operating the processor to apply the initial weighting to the measured signal and the test signal comprises constructing a weighting vector comprising a plurality of weighting values to be applied to each of the plurality of sub-bands of the test signal and the measured signal; and operating the processor to iteratively perform the operations of constructing an equalizer based on the weighted signals comprises, in each successive iteration after the initial weighting is applied, adjusting the weighting comprises increasing a per-sub-band weighting value applied to each sub-band that is subject to the next successive iteration of the operations of constructing the equalizer.