Method for the linearization of the power stage of a signal transmitter, corresponding system and receiver

摘要

The system includes a transmitter (1) with a stage (9) susceptible to alter the signals transmitted, for instance distorting them. The effect of the alteration action made by the above mentioned stage (9) of the transmitter (1) is detected on the receiver side (2) generating a corresponding control signal (ci) destined to be re-transmitted to the transmitter (1), for instance using one of the service channels. Therefore, the transmitted signals can be subjected to pre-treatment, for instance through a pre-distorter (4) placed upstream the distorting stage (9). Preferential application to transmission of digital signals in systems in which the control signal (Ci) is generated with a feedback action based on the use of decision symbols (aR(n)) obtained at the demodulator output.