System and method for frequency reuse for wireless point-to-point backhaul

摘要

A system and method for frequency reuse for wireless point-to-point backhaul. Frequency reuse is enabled through the cancellation of interfering signals generated by interference sources. In one embodiment, a conventional dish antenna is complemented with one or more additional auxiliary antennas (e.g., isotropic). The one or more additional auxiliary antennas enable cancellation of interfering signals whose direction of arrival (DOA) is off the dish antenna's bore-sight.

主权项

1. A microwave receiver system, comprising:
a parabolic dish antenna that is configured to receive microwave signals transmitted via a plurality of backhaul links, wherein the plurality of backhaul links comprises at least a first link and a second link, wherein a first node is configured to transmit a first signal to a second node via the first link using a first frequency band, and a second node is configured to transmit a desired signal to the parabolic dish antenna via the second link using the first frequency band, wherein the first node further comprises an interference source by transmitting an interference signal in the first frequency band comprising at least a portion of the first signal directly to the parabolic dish antenna, the parabolic dish antenna further configured to generate a dish antenna output according to the desired signal and the interference signal received by the parabolic dish antenna; one or more auxiliary antennas that are configured to receive microwave signals comprising a version of the desired signal from the second node and a version of the interference signal directly from the first node, and generate one or more auxiliary antenna outputs according to the version of the desired signal and the version of the interference signal received by the one or more auxiliary antennas; and a signal processing module that is configured to receive first signals based on the dish antenna output and second signals based on the one or more auxiliary antenna outputs, the processing module further configured to use the one or more auxiliary antenna outputs to remove interference from the interference source that are present in the first signals based on the dish antenna output.