Patent ID: 7876738

Claim:
A method for use by an electronic device, comprising: performing a first partial correlation between a subset of samples over a first fraction of an epoch of a received code-modulated signal and a respective subset of samples over a corresponding first fraction of an epoch of a replica code; performing at least a second partial correlation between a different subset of samples over at least a second fraction of said epoch of the received code-modulated signal and a respective different subset of samples over at least a corresponding second fraction of said epoch of the replica code; comparing results of said first partial correlation and at least said second partial correlation; and determining if the code-modulated signal and the replica code are cross-correlated based on the comparison of the results between said partial correlations, wherein a cross-correlation between the code-modulated signal and the replica code is determined if said results indicate that said received code-modulated signal is not associated with said replica code at a specific alignment, wherein for said comparison, a time-to-frequency transform is applied to results of said partial correlations, and wherein a subsequent spectrum analysis of the result of said time-to-frequency transform is performed.