Patent ID: 7916798

Claim:
A system for performing automatic gain control during signal processing of OFDM symbols at a receiver, the system comprising: a first stage adapted to receive signals from a receiver antenna and configured to apply a first gain to received signals; and a second stage including a programmable gain amplifier (PGA), the second stage coupled in series with the first stage, the second stage being adapted to provide amplified signals to an analog to digital converter (ADC), and configured to apply a second gain to signals generated by the first stage, the ADC being adapted to provide digitized output to a digital baseband processor, wherein the first stage is adapted to receive a first gain setting signal from the digital baseband processor, the first stage configured to adjust the first gain based on the first gain setting signal; wherein the second stage is adapted to receive a second gain setting signal from the digital baseband processor, the second stage configured to adjust the second gain based on the second gain setting signal, and wherein the first gain setting signal and the second gain setting signal are distinct signals.