Abstract: A method of signal processing and a signal processor for a receiver for OFDM encoded digital signals. OFDM encoded digital signals are transmitted as data symbol sub-carriers in several frequency channels. A subset of the sub-carriers is in the form of pilot sub-carriers having a pilot value (ap) known to the receiver. The method comprises estimation of a channel transfer function (H) and a derivative of the channel transfer function (H?) by means of a channel estimation scheme from a received signal (y). Then, an estimation of data (a) is performed from the received signal (y) and the channel transfer function (H). Finally, an estimation of a cleaned received signal (y2) is performed from the data (a), the derivative of the channel transfer function (H?) and the received signal (y) by removal of inter-carrier interference (ICI), by taking into account at least one of a previous and a future OFDM symbol, followed by an iteration of the above-mentioned estimations.

Abstract: The invention applies to the verification of the identity of an object based on measurements of a physical characteristic of said object. In an enrollment phase, an object with known identity is measured. The resulting enrollment measurement is stored for future reference. Then in the verification phase, an object presented for verification is measured, and the verification measurement is compared with the enrollment measurement to decide whether or not the two measurements originate from the same object. According to the invention, the enrollment and the verification measurements are modeled as two realizations of a first random variable affected by an enrollment noise and a verification, noise respectively, said enrollment and verification noises being a realization of a second and a third random variable, respectively, said first, second and third random variables having known distributions.