Patent ID: 7068745

Claim:
A multi-carrier receiver system, comprising: a frequency conversion circuit for generating an intermediate frequency (IF) multi-carrier signal based on a transmission frequency multi-carrier signal; a feedforward cancellation loop for generating an amplitude corrected multi-carrier signal based on the IF multi-carrier signal such that the amplitude corrected multi-carrier signal has a reduced dynamic range with respect to the IF multi-carrier signal; and a primary analog to digital (A/D) converter for generating a digital multi-carrier signal based on the amplitude corrected multi-carrier signal; wherein the feedforward cancellation loop includes: a secondary A/D converter for generating a digital cancellation signal based on the IF multi-carrier signal; and a level adjustment circuit coupled to the secondary A/D converter for digitally adjusting the digital cancellation signal such that carriers in the digital cancellation signal correspond to carriers in the IF multi-carrier signal having power levels above a predetermined threshold.