| 摘要 |
A communication system includes a communication channel (110) for time-synchronous transfer of data symbols a1,..., aN to a receiver (130). A sampling unit (132) is used for time-sequential sampling the channel under control of a sampling clock signal that is synchronous with transmittal of the data symbols. Each sample includes a representation of a data symbol and noise. A data-aided timing error detector (133) receives a representation of the samples. The detector includes a data-dependent noise predictor (310) for generating a predicted noise sequence n1,..., nN where each predicted noise value nk for the k-th sample of the sequence depends on a cluster of a plurality of sampled data symbols and a noise whitening unit (320) for whitening of noise in the sample sequence by removing the predicted noise value nk. The detector is arranged to provide a signal for correcting the sampling clock signal in dependence on the whitened sample sequence.
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