A system to transmit data in the form of at least one pulse sequence modulated by symbol encoding units. The symbol encoding units include a plurality of signal encoders (ENCi) connected to a plurality of antennas, pulse generating units (PGi) for delivering a basic pulse sequence (PSQi), first energy splitting units (ENSPi) for splitting basic pulse sequence into sub-sequences (Psqi-PsqiK), signal modulating units (SGM1-SGMK) for applying to the sub-sequence a tunable coefficient, and combination units (CMBMi) for combining the sub-sequences (Tsgi1-TsgiK) into a signal (Tsgi) to be transmitted by the antenna (ANTi) to which the encoder (ENCi) is connected. Each signal encoder (ENCi) is linked to a single antenna (ANTi).