Symbol Timing Synchronization Algorithms for Wireless LAN Systems in Multipath Channels

Jooyeol YANG  Kyungwhoon CHEUN  Jeongchang KIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.7   pp.2198-2204
Publication Date: 2008/07/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.7.2198
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
multipath channels,  OFDM,  synchronization,  wireless LAN,  

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Summary: 
In this paper, efficient symbol timing synchronization algorithms for IEEE 802.11a/g wireless LAN systems in multipath channels are proposed. For improved accuracy, the algorithms utilize an effectively elongated training symbol together with nonlinear soft-limiting of the correlator output. The algorithms allow efficient utilization of the guard interval in multipath channels. Simulation results show that the proposed algorithms significantly outperform conventional algorithms.