Patent ID: 7515929

Claim:
A communication receiver, comprising: a plurality of analog RF (radio frequency) front end modules, each constructed to provide a respective analog communication signal; a memory storing sets of factors, each set of factors being associated with one of the front end modules; a control circuit arranged to select one of the plurality of front end modules and select the set of factors associated with that front end module; a digital backend module arranged to receive the analog communication signal from the selected front end module and generate a digital baseband signal, the digital backend module having a digital automatic gain control (AGC); and the digital backend module operating the steps of: receiving the analog communication signal from the selected front end module; using the selected set of factors associated with the selected front end module, including digital AGC coefficients, to digitally process the received analog communication signal, wherein the digital AGC receives a digital adjustment signal and a digital data signal, separates the digital adjustment signal into a coarse data and a fine data, adjusts the gain of the digital data signal according to the coarse data, and adjusts the gain of the digital data signal according to the fine data; and generating a digital baseband signal.