Patent ID: 8588193

Claim:
An apparatus comprising: a transmitter to send data packets to a single remote station through an antenna array using multiple spatial beams and a plurality of analog converters; a receiver to receive feedback from the remote station through a lower data rate wireless channel separate from the multiple spatial beams, the feedback including a quality measure of data packets received from the transmitter; and a processor to control transmission parameters of the transmitter using the feedback, the processor having a plurality of states, in a first channel analysis state, the processor determining a beam-forming vector for the antenna array, in a second beam search and training state, the processor determining pre-coding coefficients for the data packets, and in a third high rate transmission state, the processor providing pre-coded data packets to the transmitter for transmission, wherein the processor transitions from the third state to the first state upon receiving feedback including a reduced quality measure from the remote station, and wherein the processor determines a beam-forming vector by sending training packets to the remote station and comparing the feedback for each training packet, each training packet having a different beam-forming vector.