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On a blind fractionally sampling-based carrier frequency offset estimator for noncircular transmissions

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3 Author(s)
Ciblat, P. ; Dept. Commun. et Electronique, Ecole Nat. Superieure des Telecommun., Paris, France ; Serpedin, E. ; Yan Wang

This letter deals with the problem of nondata-aided carrier frequency offset estimation of noncircular modulations transmitted through unknown frequency-selective channels. By exploiting the unconjugated cyclostationary statistics induced by oversampling in the received waveform, an optimized carrier frequency offset estimator is proposed and its asymptotic (large sample) performance analyzed. In order for the proposed frequency estimator to achieve the minimum mean-square estimation error, it is shown that the oversampling rate need not be larger than twice the symbol rate. It is also shown that the proposed synchronizer is asymptotically jitter-free, admits a feedforward structure that may be implemented in digital form, and is suitable for burst transmissions.

Published in:

Signal Processing Letters, IEEE  (Volume:10 ,  Issue: 4 )

Date of Publication:

April 2003

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