European Space Agency

Stefano Andrenacci

Alberto Ginesi

Bjorn Ottersten

Ana Isabel Perez-Neira

Giorgio Taricco

Björn Ottersten

Symeon Chatzinotas

Pantelis-Daniel Arapoglou

Alessandro Vanelli Coralli

Dimitrios Christopoulos

Miguel Angel Vazquez

Ana Isabel PÉREZ-Neira

Miguel ÁNgel VÁZQUEZ

Alessandro Vanelli Coralli Coralli

Ana Isabel Pérez-Neira Pérez-Neira

Miguel ÁNgel Vázquez Vázquez

A, method and apparatus for wirelessly transmitting data to a plurality of terminals in each of a plurality of beams through a plurality of transmit feeds includes selecting, for each beam, two or more terminals among the plurality of terminals in the beam as a subgroup of terminals, on the basis of channel state information of the plurality of terminals; determining, for each beam, equivalent channel state information representing the subgroup of terminals in the beam on the basis of the channel state information of the terminals of at least one of the plural subgroups of terminals; and determining a set of weight coefficients that relate the plurality of transmit feeds to a plurality of signals that are intended for transmission in the plurality of beams on the basis of the equivalent channel state information representing the plural subgroups of terminals. Also disclosed is a method and apparatus for receiving data transmitted via wireless transmission to a plurality of beams through a plurality of transmit feeds and estimating a channel on the basis of the received data. The present disclosure is advantageously applicable to satellite communication systems.

Joint transmitter signal processing in multi-beam satellite systems

Growing community of inventors

Bologna, Italy

Stefano Andrenacci