Patent ID: 7349497

Claim:
A receiver circuit, comprising: a sampler, for taking digital samples of a received signal, said received signal including at least a first portion and a second portion which repeats the content of the first portion after a repeat interval; a plurality of correlators for measuring: a first correlation between a first group of samples including at least samples around the beginning of the first portion of the signal, and a second group of samples including at least samples around the beginning of the second portion of the signal; and a second correlation between a third group of samples including at least samples around the end of the first portion of the signal, and a fourth group of samples including at least samples around the end of the second portion of the signal; means for comparing the measured first and second correlations to produce a comparison output; and means for determining a revised assumed position of the first and second portions on the basis of the comparison output in order to tend to equalize the first and second correlations.