Method for recovering the symbol time by a receiving device

A method for symbol time recovery, the method being implemented by a receiver to decode a sequence of symbols received from a transmitter, a symbol time of the transmitter having a bias relative to a symbol time of the receiver, the method comprising:

• sampling a baseband signal representative of the sequence of symbols, each symbol of the sequence of symbols being associated with a symbol instant,
• detecting a transition between a current symbol and a preceding symbol which immediately precedes the current symbol in the sequence of symbols, the transition being detected if the current symbol and the preceding symbol have different states,
• in a presence of the transition:
• measuring an absolute error on the symbol instant of the current symbol,
• depending on a measured absolute error, updating a statistical model of the bias between the symbol time of the transmitter and the symbol time of the receiver, and
• correcting the symbol instant of a subsequent symbol which immediately follows the current symbol in the sequence of symbols depending on at least one of the measured absolute error and the bias estimated from the statistical model, and
• in an absence of a transition:
• extrapolating a relative error on the symbol instant of the current symbol from the statistical model, and
• correcting the symbol instant of the subsequent symbol depending on an extrapolated relative error.