Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction

A base transceiver system of a communication system, comprising:

• an antenna array configured to receive vectors of signals including signals transmitted by user terminals of the communications system and signals transmitted by a transceiver of an independent communications system;
• and
• an electronics system coupled to the antenna array and configured to obtain location information for a transceiver of the independent communications system, to generate complex transmitting weights for the antenna array that form a spatial null directed at the transceiver of the independent communications system, and to transmit a downlink communications signal over the adaptive antenna system to the user terminal using the complex transmitting weights;
• wherein the antenna array is configured to receiving a beacon signal from the transceiver of the independent communications system;
• and
• wherein the electronics system is configured to form an uplink antenna pattern using the complex transmitting weights, receive the beacon signal using the uplink antenna pattern, and to measure 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.

A communications system, comprising:

• a base transceiver system comprising an antenna array configured to receive vectors of signals including signals transmitted by user terminals of the communications system and signals transmitted by a transceiver of an independent communications system, and an electronics system coupled to the antenna array and configured to obtain location information for a transceiver of the independent communications system, to generate complex transmitting weights for the antenna array that form a spatial null directed at the transceiver of the independent communications system, and to transmit a downlink communications signal over the adaptive antenna system to the user terminal using the complex transmitting weights;
• wherein the antenna array is configured to receive a beacon signal from the transceiver of the independent communications system;
• and
• wherein the electronics system is configures to form an uplink antenna pattern using the complex transmitting weights, receive the beacon signal using the uplink antenna pattern, and to measure 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.