Patent ID: 7062243
Filing Date: 2006-06-13
Classification: H03D,H03G,H04B,H04L,H04W

Abstract:
1. A wireless communications receiver comprising: (a) means for applying a gain to a received signal, responsive to an automatic gain control (AGC) signal, to produce a scaled signal; (b) AGC means for determining amplitude of the scaled signal and generating the AGC signal; and (c) means for estimating a DC offset of the scaled signal; wherein the means for estimating the DC offset reads a previously stored DC offset estimate from a memory means; wherein the AGC signal has a finite number of possible values; wherein the memory means stores a DC offset estimate corresponding to each possible value of the AGC signal; and wherein the number of DC offset estimates stored in the memory means is less than the finite number of possible values of the AGC signal, such that at least one of the stored DC offset estimates corresponds to more than one of the values of the AGC signal.