Patent ID: 8780787

Claim:
A method for minimizing co-channel interference on-board a satellite, the method comprising: post-compensating of an up-link signal received by the satellite, the up-link signal comprising a desired signal transmitted by a first transmitter and an interfering signal transmitted by a second transmitter, the post-compensating comprising: identifying the interfering signal based on post-compensation parameters including locations of the first transmitter and the second transmitter, carrier power levels of the desired signal and the interfering signal, and satellite antenna characteristics; determining gain relations between a satellite receiver antenna gain in a direction of the first transmitter and a satellite receiver antenna gain in a direction of the second transmitter; sampling and scaling the interfering signal at the satellite based on the determined gain relations; and estimating, based on the sampled and scaled interfering signal, a co-channel up-link interference component in the up-link signal, wherein the post-compensated up-link signal is represented by Z 1 ( t )=[Delta R/R 22 ]·Y 1 ( t ), where DeltaR=(R 11 ·R 22 −R 12 ·R 21 ), Y 1 (t) is the desired signal transmitted by the first transmitter, R 11 is the satellite receiver antenna gain in the direction of the first transmitter, R 12 is the satellite receiver antenna gain in the direction of the second transmitter, R 22 is an antenna gain of another satellite receiver in the direction of the second transmitter, and R 21 is an antenna gain of the other satellite receiver in the direction of the first transmitter.