Patent ID: 7336739
Filing Date: 2008-02-26
Classification: H03D

Abstract:
1. A method of detecting at least one characteristic of a signal of interest within an input signal, comprising: multiplying at least one set of samples from the input signal by at least one set of samples representing a complex conjugate of the input signal to obtain a series of correlation samples; summing sets of one or more consecutive correlation samples to obtain a series of pulse sums, each pulse sum having an associated start time; integrating a plurality of sets of non-consecutive pulse sums, with the start times of each successive non-consecutive pulse sum in a given set being separated from a preceding pulse sum in the set by an pulse repeat value associated with the set, to obtain respective search values for the plurality of sets of non-consecutive pulse sums; selecting an optimal search value as representing a pulse repeat interval for the signal of interest equal to the pulse repeat value separating pulse sums associated with the set of non-consecutive pulse sums represented by the optimal search value; and detecting the signal of interest within the input signal according to the determined pulse repeat interval.