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Robust frequency and timing synchronization for OFDM | IEEE Journals & Magazine | IEEE Xplore

Robust frequency and timing synchronization for OFDM


Abstract:

A rapid synchronization method is presented for an orthogonal frequency-division multiplexing (OFDM) system using either a continuous transmission or a burst operation ov...Show More

Abstract:

A rapid synchronization method is presented for an orthogonal frequency-division multiplexing (OFDM) system using either a continuous transmission or a burst operation over a frequency-selective channel. The presence of a signal can be detected upon the receipt of just one training sequence of two symbols. The start of the frame and the beginning of the symbol can be found, and carrier frequency offsets of many subchannels spacings can be corrected. The algorithms operate near the Cramer-Rao lower bound for the variance of the frequency offset estimate, and the inherent averaging over many subcarriers allows acquisition at very low signal-to-noise ratios (SNRs).
Published in: IEEE Transactions on Communications ( Volume: 45, Issue: 12, December 1997)
Page(s): 1613 - 1621
Date of Publication: 06 August 2002

ISSN Information:


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