Patent ID: 7889782

Claim:
A correlator for de-spreading a digitally-modulated signal including a plurality of symbols, each symbol spread among a plurality of chips, the digitally-modulated signal having a nominal carrier frequency, the correlator comprising: a tapped delay line including a plurality of registers, each register for holding a chip of a symbol of the digitally-modulated signal as a function of time; a frequency correction generator for outputting a plurality of sets of phase rotation tap weights to the tapped delay line, each set of phase rotation tap weights corresponding to a frequency offset of an actual carrier frequency of the digitally-modulated signal from the nominal carrier frequency; and taps operatively coupled to registers for performing a tap weight operation on each chip to rotate a phase of each chip to correct the frequency offset from the nominal carrier frequency and for performing another tap weight operation on each chip to de-spread the digitally-modulated signal.