European Space Agency

Pantelis-Daniel Arapoglou

Alberto Ginesi

Bjorn Ottersten

Ana Isabel Perez-Neira

Giorgio Taricco

Symeon Chatzinotas

Björn Ottersten

Stefano Andrenacci

Alessandro Vanelli Coralli

Dimitrios Christopoulos

Emiliano Re

Miguel Angel Vazquez

Miguel ÁNgel Vázquez Vázquez

Ana Isabel PÉREZ-Neira

Miguel ÁNgel VÁZQUEZ

Alessandro Vanelli Coralli Coralli

Ana Isabel Pérez-Neira Pérez-Neira

A method of controlling transmission of signals in a group of beams emitted by a satellite, wherein each beam has an associated area of coverage, includes adjusting an allocation of a channel resource by re-distributing portions of the channel resource among the beams in the group of beams in accordance with respective capacity demands for the areas of coverage of the beams in the group. The method further includes obtaining, for each of the areas of coverage, an indication of a signal quality from a terminal in the respective area of coverage for the adjusted allocation of the channel resource, and applying a co-channel interference mitigating technique to the group of beams in accordance with the obtained indications of the signal quality. The application further relates to an apparatus for performing such method.

Interference-resilient flexible techniques for payload resource allocation in broadband satellites

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

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Noordwijk, Netherlands

Pantelis-Daniel Arapoglou