Receiver, transceiver system and associated receiving method

A digital data receiver comprising:

• a sampler designed to sample a received signal (r(t)) that has propagated in a propagation channel, successive symbols (sn) being encoded in this received signal (r(t)), in order to provide one or more samples (yn) per received symbol (sn), the symbols (sn) belonging to a predefined alphabet (Ω);
• an equalizer designed to compute, for each received symbol (sn), an estimate (zn) of this symbol (sn) based on a linear combination (y′n) of the samples (yn) for this symbol (sn);
• and
• a decision module designed to determine the symbol of the alphabet (Ω) closest to the estimate (zn) as detected symbol (ŝn);
• wherein the alphabet (Ω) exhibits a decentering such that the transmitted symbols (sn) have a non-zero predefined expectation ([sn]), and in that the equalizer is designed to add a non-zero scalar component (θ) to the linear combination (y′n) in order to compensate at least partially for the decentering;
• the equalizer being designed to iteratively (B1, B2) update the scalar component (θ) on the basis of symbols previously determined by the decision module.