Patent ID: 9568589
Date: 2017-02-14
CPC Classifications: G01S,H01Q,H04B

Claim:
1. A method for beamforming in a satellite communications network, the method comprising: obtaining, by a satellite, receive beamforming coefficients representing weights that are applied to receive signals to obtain receive beams; obtaining, by the satellite, connection data defining which receive frequency channels from which receive beams are mapped to which transmit frequency channels of which transmit beams; obtaining, by the satellite, transmit beamforming coefficients representing weights that are applied to transmit beams to obtain transmit signals; calculating, by the satellite, transform data based at least on the receive beamforming coefficients, a connection matrix, and the transmit beamforming coefficients across all the receive beams and all the transmit beams; obtaining, by the satellite, receive signals using corresponding receive elements, the receive signals forming one or more receive beams at one or more receive frequency channels; calculating, by the satellite, transmit signals by a single linear combination of the obtained receive signals according to the transform data, the calculated transmit signals forming one or more transmit beams at one or more transmit frequency channels without forming receive beams from the receive signals; and transmitting, by the satellite, the calculated transmit signals using corresponding transmit elements.