Methods of transmitting and receiving a multicarrier signal, and corresponding transmitter, receiver, return signal, and computer programs

A receiver configured to receive a signal corresponding to a multicarrier signal transmitted by a transmitter via at least one transmission channel, said receiver comprising:

• estimation means for estimating at least one channel and delivering overall information about said at least one channel in the frequency domain, referred to as the “frequency response” and comprising frequency samples;
• sharing means for subdividing the frequency response of said channel into blocks and delivering at least two frequency sample vectors, it being possible for a given frequency sample to belong to a plurality of frequency sample vectors;
• transform means for transforming said frequency sample vectors from the frequency domain to a transform domain and delivering, for at least one frequency sample vector, a partial response of said channel in said transform domain;
• and
• feedback means for sending a return signal back to said transmitter and conveying at least samples extracted from said partial responses and representative of said channel in said transform domain.

A method of transmitting a multicarrier signal via at least one transmission channel by a transmitter, the method comprising:

• receiving a return signal sent back from a receiver to the transmitter and delivering at least two sets comprising samples representative of said channel in the transform domain and each associated with a distinct partial response of said channel in the transform domain;
• transforming said sets to the frequency domain, thereby delivering frequency sample vectors;
• and
• recombining said frequency sample vectors, thereby delivering overall information about said channel in the frequency domain.

A transmitter configured to transmit a multicarrier signal via at least one transmission channel, the transmitter comprising:

• receiver means for receiving a return signal sent back by a receiver to the transmitter delivering at least two sets comprising samples representative of said channel in the transform domain, each set being associated with a distinct partial response of the channel in the transform domain;
• transform means for transforming said sets to the frequency domain and delivering frequency sample vectors;
• and
• recombination means for recombining said frequency sample vectors and delivering overall information about said channel in the frequency domain.

A non-transitory computer-readable medium comprising a computer program stored thereon and including instructions for performing a method of receiving by a receiver when the program is executed by a processor, wherein the method comprises:

• receiving with the receiver a signal corresponding to a multicarrier signal transmitted by a transmitter via at least one transmission channel, comprising:
• an estimation step of the receiver estimating said at least one channel and delivering overall information about said at least one channel in the frequency domain, referred to as the “frequency response” and comprising frequency samples;
• and
• for said at least one channel:
• at least one sharing step of subdividing the frequency response of said channel into blocks and delivering at least two frequency sample vectors, it being possible for a given frequency sample to belong to a plurality of frequency sample vectors;
• a transform step of transforming said frequency sample vectors from the frequency domain to a transform domain and delivering, for at least one frequency sample vector, a partial response of said channel in said transform domain;
• and
• a feedback step of sending a return signal back to said transmitter, the return signal conveying samples extracted from said partial responses and representative of said channel in said transform domain.