DEVICE AND METHOD FOR DIGITAL DEMODULATION OF SIGNAL RECEIVED IN DIGITAL COMMUNICATION RECEIVER

摘要

PROBLEM TO BE SOLVED: To surely correct sampled data at a sampling point time and attain a stable operation. SOLUTION: The device (10) for digital demodulation comprises a polyphase filter (14), comprising a set of N distinct elementary digital filters and means (16) of selection, for each block of an elementary digital filter (Hi ). These latter comprise means (28) for computing an error signal, a means (3) for comparing performance indicators for the digital filters arising from the error signals and a means (30) for determining the elementary digital filter (Hi ) to be implemented in respect of the following block as a function of the result of the comparison. The digital filters (Hi ) are arranged orderly. They are chosen according to the order of the filters, as a function of the result of the comparison performed on the performance indicators for the elementary digital filters (Hi ) implemented with for at least one previous block. Applications include mobile telephone or base station.