Patent ID: 9083498
Filing Date: 2015-07-14
Classification: H04L

Abstract:
1. A method for processing data, wherein said data corresponds to a sequence of symbols, comprising the steps of sampling an electrical receive signal with a sample rate of N samples per symbol of said signal where N is greater than or equal to 2, and generating a sampled data signal; generating a multi-dimensional histogram having bins wherein values for each of the N samples per symbol are aligned along a respective axis associated with a respective dimension and wherein each of the bins in the histogram is associated with a combination of N sample values for the N samples that are sampled per symbol and each bin has a value specifying a relative frequency of occurrence of the associated combination of values; comparing values of bins of said samples in the histogram to generate difference values wherein the histogram has at least one symmetry property; accumulating said difference values to derive a control parameter; and controlling a phase of a sampling clock signal in relation to a phase of said data signal or controlling a phase of samples generated by interpolation of said samples based on said control parameter to improve the symmetry property of the histogram.