USING MULTIPLE CORRELATORS TO DETERMINE SIGNAL SENT AND FREQUENCY OFFSET

摘要

A digital radio receiver (54) is adapted to receive radio signals which are modulated using continuous phase modulation. The receiver comprises means for receiving an analogue radio signal having a carrier frequency, a plurality of correlators (6, 8) each corresponding to a different bit sequence which share a common estimator (4) for estimating a frequency offset between said carrier frequency and a nominal carrier frequency, and means (12) for determining which of said correlators (6, 8) produces a desired output signal.