Patent ID: 7463704

Claim:
A wireless local area network (WLAN) receiver comprising: a first chain including a first antenna and a first plurality of amplifiers for amplifying a signal received by the first antenna and processed by the first chain; a second chain including a second antenna and a second plurality of amplifiers for amplifying the signal received by the second antenna and processed by the second chain; and a gain control for independently adjusting a gain for each amplifier in the first plurality of amplifiers and the second plurality of amplifiers, wherein the gain control includes: a first automatic gain control (AGC) pre-processor coupled to receive a processed signal from the first chain; a second AGC pre-processor coupled to receive a processed signal from the second chain; and an AGC controller coupled to receive output signals from the first AGC pre-processor and the second AGC pre-processor, the output signals including power measurements and correlation results, wherein the AGC controller provides control of each amplifier in the first plurality of amplifiers and the second plurality of amplifiers, wherein each AGC pre-processor includes: a first filter that eliminates a DC component of the processed signal; and a first power detect unit for receiving an output of the first filter and providing a first power value to the AGC controller.