GI-Based Estimation of Integer Carrier Offset for Multicarrier Transmission Systems

Hyoung-Kyu SONG
Young-Hwan YOU

IEICE TRANSACTIONS on Communications   Vol.E89-B    No.12    pp.3430-3432
Publication Date: 2006/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.12.3430
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
OFDM,  guard interval,  integer frequency offset,  pilot symbol,  

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In this letter, we focus on non-pilot-symbol assisted integer frequency offset estimation for multicarrier orthogonal frequency division multiplexing (OFDM) systems. We introduce a frequency offset estimator that is based on the guard interval (GI) present in OFDM signals. We show by simulation that the frequency offset estimator can accurately estimate the frequency misalignment at the sacrifice of limited estimation range.