Patent ID: 7593484

Claim:
A method for performing automatic gain control in a radio frequency (RF) receiver, comprising: receiving an analog radio frequency signal, the analog radio frequency signal occurring during a defined time period; downconverting the analog radio frequency signal to a downconverted analog signal; determining, in an RF portion of the receiver, a peak signal level of the downconverted analog signal using a peak-to-peak amplitude hold detector; determining whether the peak signal level falls within a predetermined range; and generating a gain control setting for at least one analog component based on whether the peak signal level falls within the predetermined range; converting the downconverted analog signal to a digital signal; buffering the digital signal over the defined time period; estimating a measure of receiver impairment; calculating a property of the digital signal; applying a compensation factor in response to the measure of receiver impairment to the digital signal over the defined time interval; comparing the property of the digital signal to a digital reference value; scaling the digital signal; providing a scaled digital signal including a digital gain setting to a baseband subsystem associated with the RF receiver; and synchronizing a change in the analog gain setting and the digital gain setting to such that a peak-to-peak burst signal amplitude measurement period is less than one burst interval.