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A Data-Aided Symbol Timing Estimation Algorithm for OFDM/OQAM Systems

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3 Author(s)
Fusco, T. ; Dipt. di Ing. Elettron. e delle Telecomun., Univ. di Napoli Federico II, Naples, Italy ; Petrella, A. ; Tanda, M.

In this paper we deal with the problem of data- aided symbol timing estimation for orthogonal frequency division multiplexing systems based on offset-QAM modulation (OFDM/OQAM). Specifically, a data-aided joint phase offset and symbol timing estimator, based on the least squares (LS) approach, exploiting the conjugate-symmetry property of a properly designed training symbol, is derived. Since the phase estimate is in closed form, the symbol timing estimate requires only an one-dimensional maximization procedure. The derived LS estimator does not require the knowledge of the prototype filter and, moreover, its performance, is independent of the carrier frequency offset.

Published in:

Communications, 2009. ICC '09. IEEE International Conference on

Date of Conference:

14-18 June 2009