Method and device for the recovery of synchronization clock by symbols from a signal possessing great possibilities in frequency

摘要

Device for the clock recovery of synchronization symbols on the basis of a reception signal having a wide range of error or offset in frequency. The amplitudes of signals in phase and quadrature sampled is determined (210). These amplitudes are added and (227) in the registers to the accumulator (231, 233, 235, 237, 239) to the sum of the sums of the first and second signals for each sampling time and practically over the length of a pulse in the waiting. A circuit for determining the maximum / minimum (240) chosen, the sampling time having a greater or smaller amount to provide a recovered clock signal (270). The carrier can then be recovered (260) and a sampler downwards (250) sampled at the bottom of the reception signals in phase and quadrature on the basis of the recovered clock signal.