Patent ID: 7292642

Claim:
A process for transmitting a multicarrier signal comprising a temporal succession of symbols formed by a set of data elements, said symbols being organized in successive frames each comprising a plurality of symbols, the process comprising: modulating by each of said data elements a carrier frequency of said signal, one of said carrier frequencies modulated, at a given point in time, by one of said data elements being called a carrier, placing in each of at least some of said frames at least one reference symbol integrally comprising reference data elements known at least to one receiver and complying with at least one constraint on the value of at least one of said reference data elements, so as to obtain the reduction, at reception, of at least one interference term affecting at least another of said reference data elements, wherein one of said constraints comprises the cancellation, for at least one reference symbol, of an interference term at least partially due to the carriers directly neighboring said reference symbol in the time-frequency space so that channel estimation is improved in a receiver of said signal, and transmitting the signal.