Thales

Zakariya Faraj

Nicolas Chuberre

Jean-Didier Gayrard

Cédric Baudoin

Erwan Corbel

Fabrice Arnal

Mathieu Dervin

Cedric Baudoin

A method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-GSO satellites and a first set of terminals, the method comprises the following steps, for each terminal of the first set: determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set, authorizing the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with the link is greater than or equal to the separation angle threshold.

Method for allocating radio resources in a communication system using non-GSO satellites with interference level constraint to a geostationary system

A method for transmission of a signal simultaneously including a first stream of binary data and one or more other streams of binary data, the method including, in the following order: dynamic distribution of bits of the data streams between coders, with one coder per data stream; coding the distributed bits using the coders; dynamic distribution of the coded bits between hierarchical levels of a modulator; and hierarchical modulation using the modulator.

Transmission method and system using an adaptive and programmable hierarchical modulation

A technique for configuring, in real time, an equipment item receiving and processing primary signals which are transmitted to it by satellite link, the technique including transmitting secondary signals with frequencies spread over a band at least partially overlapping a frequency band occupied by the primary signals, the secondary signals including signalling parameters which are used, in real time, by the equipment item to configure processing applied to the primary signals. The technique is applicable to dynamic switching of beams in a multi-beam satellite and to dynamic switching of frames, for example in a time-division multiple access system.

Method for configuring an adaptive processing of primary signals by the transmission of secondary spread-frequency signaling signals

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Blagnac, France

Zakariya Faraj