Frequency reuse in wireless point-to-point communication systems

摘要

A method for interference reduction in transmission of at least two single carrier frequency continuous communication beams including producing a first communication signal for a first digital communication link, producing a second communication signal for a second digital communication link, transmitting the first communication signal over a first continuous communication beam at a first frequency, transmitting the second communication signal over a second continuous communication beam at the first frequency, characterized by modifying the first communication signal using transmitter interference cancellation.;A method for interference reduction in reception of at least two single carrier frequency continuous communication beams including receiving a first received signal from a first digital communication link, receiving a second received signal from a second digital communication link, modifying the first received signal, adding the modified first received signal to the second received signal, thereby producing a reduced-interference second received signal, characterized by the modifying of the first received signal being based, at least in part, on reducing an error rate of the reduced-interference second received signal.;Related apparatus and methods are also described.

主权项

1. A method for interference reduction in transmission of at least two single carrier frequency continuous communication beams comprising:
producing a first communication signal for a first wireless communication link; producing a second communication signal for a second wireless communication link; transmitting the first communication signal over a first continuous communication beam to a first receiver at a first frequency; transmitting the second communication signal over a second continuous communication beam to a second receiver at the first frequency; receiving the first communication signal at the second receiver; estimating a first channel response for the first communication signal received at the second receiver; sending information regarding the first channel response back to a transmitter;and further comprising:
a pre-coder on the transmitter side modifying the first communication signal by passing said first communication signal through a first filter, the first filter having coefficients optimized for cancellation of said first communication signal received at said second receiver, the coefficients being based, at least in part, on the information regarding the first channel response; and an adder adding said modified first communication signal to said second communication signal.