Patent ID: 8903013

Claim:
A method comprising: sending pulses from a sender device to a receiver device in a transmission channel, wherein the pulses represent information symbols, with each of these pulses being associated with a time slot in a symbol time, and wherein sending includes a training step that is carried out before sending payload information and that includes sending an independent training sequence, wherein the training sequence is sent independently of the payload information and is made up of two parts: a first part of the training sequence including at least one pulse of energy that is greater than the energy of a pulse carrying payload information, with there being a large number of time slots between the sending of said pulse and the sending of the next pulse; and a second part of the training sequence including a set of pulses known in advance, which are similar to the pulses used for carrying payload information and generate intersymbol interference, the energy of each of these pulses in the second part being equivalent to the energy of a pulse carrying payload information.