A Frame Detector for Zero-Padded OFDM Systems

Young-Hwan YOU
Hyoung-Kyu SONG

IEICE TRANSACTIONS on Communications   Vol.E89-B    No.3    pp.963-965
Publication Date: 2006/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.3.963
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
OFDM,  zero padding,  frame synchronization,  multipath fading,  

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This letter proposes an orthogonal frequency division multiplexing (OFDM) frame synchronization scheme when the guard interval (GI) consists of a zero-padded (ZP) sequence. The frame synchronization method uses the ZP symbol where nothing is transmitted for GI so that the drop in received power can be detected to find the beginning of the frame. Simulations reveal that this method significantly improves synchronization performance of the ZP-OFDM system in a multipath fading channel.