A class of data-aided timing-recovery schemes

This paper develops a class of data-aided timing-recovery schemes whose structure and operating principle are reminiscent of zero-forcing equalizer adaptation. The schemes exhibit no pattern-dependent jitter and are applicable to a variety of modulation codes and reception techniques. They come in both oversampled and baud-rate forms, and permit maximum-likelihood tracking performance whenever the oversampling factor satisfies the sampling theorem. Subject to this condition, even simple schemes can be close to optimum. It is shown that various existing; schemes belong to the class under study or are closely related to it. >

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