Abstract: 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.

Abstract: 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.

Abstract: 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 F1,F2 each of the streams having a service constraint, each being segmented into a plurality of data sub-blocks FjBi, a step in which the data sub-blocks are transformed into a frame then a step of coding and interleaving the first frame TF1, and of the second frame TF2, producing sub-frames STF1c, STF2c, then generating a frame to be transmitted by mixing n sub-frames STF1c of the data stream F1 with m sub-frames STF2c of the data stream F2.

Abstract: 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 F1,F2 each of the streams having a service constraint, each being segmented into a plurality of data sub-blocks FjBi, a step in which the data sub-blocks are transformed into a frame then a step of coding and interleaving the first frame TF1, and of the second frame TF2, producing sub-frames STF1c, STF2c, then generating a frame to be transmitted by mixing n sub-frames STF1C of the data stream F1 with m sub-frames STF2C of the data stream F2.