system and circuit for the estimation of the carrier frequency of a psk signal numerical

摘要

the present invention relates to a system for the estimation of the frequency of the carrier of a numerical signal with modulation psk, which transmit symbols at frequency fs.the found is characterised by the use of an estimate, for every interval of a symbol, the difference between two successive angular data.this estimate, properly prepared, provides the control signal to a circuit that compensates the frequency error between the carrier of the signal received and the local oscillator.in one form of execution, not limiting, the found can be implemented by circuitry exclusively digital.