Thales

Jean-Yves Bernier

Catherine Lamy-Bergot

Jean-Luc Rogier

Sylvain Traverso

A method for reducing the peak factor of a signal transmitted in a frequency band comprising several channels, the signal using a plurality of channels in the band comprises: a step of clipping the signal, a step of subtracting the clipped signal from the signal, so as to obtain a peak signal, a step of filtering the peak signal with the aid of a multichannel filter configured to comply with a predetermined spectral mask for each of the channels used by the signal, and a step of subtracting the filtered peak signal from the signal. A device for emitting a multichannel signal implementing the method for reducing the peak factor is also provided.

Method for reducing the peak factor of a multichannel emission by adaptive and intelligent clipping/filtering

A method and system is provided for transmitting data in a communication system operating in the HF band comprising a link layer and a physical layer. The system comprises a transmitter and a receiver. The transmitter comprises at least one scheduler. The method comprises a step of segmenting at least two data streams F,Feach of the streams having a service constraint, each being segmented into a plurality of data sub-blocks FBi, a step in which the data sub-blocks are transformed into a frame then a step of coding and interleaving the first frame TF, and of the second frame TF, producing sub-frames STF, STF, then generating a frame to be transmitted by mixing n sub-frames STFof the data stream Fwith m sub-frames STFof the data stream F.

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Tubize, Belgium

Jean-Yves Bernier