Patent ID: 7830980

Claim:
A wireless station (STA) capable of implicit feedback in a wireless local area network, comprising: a plurality of power amplifiers, including at least one power amplifier; a plurality of antennas, the plurality of antennas including at least one antenna to receive wireless data signals and to not transmit wireless data signals, wherein the at least one antenna is capable of being connected with said at least one power amplifier; and a switch for switching a connection of the at least one power amplifier between the at least one antenna and at least one other of the plurality of antennas, wherein said switching is to occur when the wireless station is sounding a complete channel matrix for a remote device; wherein an access point (AP) keeps track of the power received by each of said plurality of antennas and ranks them accordingly and based on said ranking, the strongest and the weakest antennas are used to send a short preamble in order to set an automatic gain control (AGC) in said AP to an appropriate level; wherein said plurality of antennas are three antennas and said plurality of power amplifiers are two power amplifiers; and wherein a first of said two power amplifiers is non-switchably connected to a first antenna of said three antennas and a second of said two power amplifiers is switchably connected to a second and third of said three antennas.