The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2019
Filed:
Apr. 14, 2015
European Space Agency, Paris, FR;
Pantelis-Daniel Arapoglou, Noordwijk, NL;
Alberto Ginesi, Noordwijk, NL;
Giorgio Taricco, Turin, IT;
Dimitrios Christopoulos, Luxembourg, LU;
Symeon Chatzinotas, Luxembourg, LU;
Bjorn Ottersten, Luxembourg, LU;
Miguel Angel Vazquez, Castelldefels, ES;
Ana Isabel Perez-Neira, Castelldefels, ES;
Stefano Andrenacci, Bologna, IT;
Alessandro Vanelli Coralli, Bologna, IT;
European Space Agency, Paris, FR;
Abstract
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.