Patent ID: 7769107

Claim:
A computer implemented method for use in determining complex antenna weights in a multiple-antenna wireless system, comprising: calculating clear channel assessment (CCA) information for multiple antennas; determining weight magnitudes for the multiple antennas using said CCA information, said weight magnitudes to be applied to receive signals associated with the multiple antennas within an analog beamformer; storing receive signals associated with the multiple antennas; determining performance metrics for the multiple-antenna wireless system for a plurality of different weight angle scenarios using said weight magnitudes and said stored receive signals; and selecting a weight angle scenario based on said performance metrics; wherein calculating CCA information includes calculating a correlation of a short preamble of a packet received by a first antenna with a reference that includes at least a portion of a known preamble sequence; and wherein determining performance metrics includes estimating a receive signal strength at an output of a combiner within the analog beamformer for the multiple-antenna wireless network system for a first weight angle scenario.