Communication method executed by a node of a cooperative telecommunications network, comprising: - a learning step, including determining a pre-equalization filter (Mi(t)), termed transmission filter, on the basis of a received learning signal (SA1, SA2), and - a step of transmitting data to a target entity of the network, using said transmission filter (Mi(t)) determined during the learning step, simultaneously and synchronously with other nodes of said network, characterized in that the learning step comprises: - a step of listening to a first learning signal coming from the target entity of the network, - a step of verifying correct reception of the first learning signal, and - in response to the correct reception of the first learning signal: - a step of determining the transmission filter (Mi(t)) on the basis at least of the first learning signal, and - a step (29, 40) of transmitting an intermediate learning signal (SA1') or a second learning signal that are pre-equalized by a pre-equalization filter (Fi(t)), termed focussing filter, determined on the basis of the first learning signal, or - in the absence of correct reception of the first learning signal, a step of listening to said second learning signal and, in response to the correct reception of said second learning signal, a step (32, 35) of determining the transmission filter (Mi(t)) on the basis at least of the second learning signal. - a learning step, including determining a pre-equalization filter (Mi(t)), termed transmission filter, on the basis of a received learning signal (SA1, SA2), and - a step of transmitting data to a target entity of the network, using said transmission filter (Mi(t)) determined during the learning step, simultaneously and synchronously with other nodes of said network, - a step of listening to a first learning signal coming from the target entity of the network, - a step of verifying correct reception of the first learning signal, and - in response to the correct reception of the first learning signal: - a step of determining the transmission filter (Mi(t)) on the basis at least of the first learning signal, and - a step (29, 40) of transmitting an intermediate learning signal (SA1') or a second learning signal that are pre-equalized by a pre-equalization filter (Fi(t)), termed focussing filter, determined on the basis of the first learning signal, or - in the absence of correct reception of the first learning signal, a step of listening to said second learning signal and, in response to the correct reception of said second learning signal, a step (32, 35) of determining the transmission filter (Mi(t)) on the basis at least of the second learning signal. - a step of determining the transmission filter (Mi(t)) on the basis at least of the first learning signal, and - a step (29, 40) of transmitting an intermediate learning signal (SA1') or a second learning signal that are pre-equalized by a pre-equalization filter (Fi(t)), termed focussing filter, determined on the basis of the first learning signal, or - in the absence of correct reception of the first learning signal, a step of listening to said second learning signal and, in response to the correct reception of said second learning signal, a step (32, 35) of determining the transmission filter (Mi(t)) on the basis at least of the second learning signal.