Patent ID: 8792591

Claim:
A method, comprising: providing, with control circuitry, a digital signal based on a received signal and a coefficient value; adaptively varying the coefficient value and an adaptive modulus parameter to reduce an amplitude deviation between the digital signal and the adaptive modulus parameter, wherein the coefficient value and the adaptive modulus parameter are adaptively varied by iteratively comparing the digital signal and a previous value of the adaptive modulus parameter, wherein a current value of the adaptive modulus parameter is updated at each iteration based on a sum of the previous value of the adaptive modulus parameter and a multiplication, and wherein the multiplication is between the previous value of the adaptive modulus parameter and a difference expression between the previous value of the adaptive modulus parameter and the digital signal, wherein the coefficient value is updated at each iteration based on the previous value of the adaptive modulus parameter; and providing an estimated amplitude mismatch value and an estimated phase mismatch value based on the updated coefficient value.