A robust metric for coarse frame and carrier synchronization of OFDM systems

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2 Citations (Scopus)

Abstract

This paper proposes a fast and reduced complexity frame and carrier acquisition scheme for OFDM systems which assume either a continuous or a burst mode operation in additive white Gaussian noise (AWGN) and frequency-selective channels. By exploiting the repetitive structure of a training symbol, a robust frame synchronizer is obtained and shown to resume to finding the peak of a certain correlation metric that is obtained by invoking Maximum Likelihood principles. A new carrier estimator that can correct frequency offsets up to two subcarrier spacings is also proposed and achieves the lowest mean-square error among the existing estimators that exploit a similar structured signaling set-up. The efficiency of the proposed synchronization algorithms is illustrated by both theoretical performance analysis and computer simulations.

Original languageEnglish
Pages (from-to)1827-1831
Number of pages5
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
Volume2
Publication statusPublished - 2002
Externally publishedYes

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Mean square error
Orthogonal frequency division multiplexing
Maximum likelihood
Synchronization
Computer simulation

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Cite this

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