Patent ID: 8412126

Claim:
A method of generating a downlink transmission signal from a base transceiver system to a user terminal associated with the base transceiver system, comprising: obtaining location information for a transceiver of an independent communications system not associated with the base transceiver system; generating complex transmitting weights for an adaptive antenna associated with the base transceiver system that form a spatial null directed at the transceiver of the independent communications system; and transmitting a downlink communications signal over the adaptive antenna system to the user terminal using the complex transmitting weights; wherein obtaining location information for the transceiver of the independent communications system comprises receiving a beacon signal from the transceiver of the independent communications system; and wherein generating the complex transmitting weights comprises: forming a uplink antenna pattern using the complex transmitting weights; receiving the beacon signal using the uplink antenna pattern; and measuring strength of the beacon signal received using the uplink antenna pattern, wherein the strength of the beacon signal received using the uplink antenna pattern provides an error signal associated with the complex transmitting weights.