Robust Joint OFDM Timing and Frequency Offset Estimator

Suckchel YANG  Yoan SHIN  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E88-A   No.11   pp.3137-3139
Publication Date: 2005/11/01
Online ISSN: 
DOI: 10.1093/ietfec/e88-a.11.3137
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Wide Band Systems)
Category: 
Keyword: 
OFDM,  symbol timing offset,  fractional frequency offset,  timing metric,  preamble,  multipath fading channel,  PN code,  

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Summary: 
A robust joint symbol timing and fractional frequency offset estimator for OFDM systems in multipath fading channels is proposed based on cyclic shifting and autocorrelation properties of PN codes. A new timing metric is also introduced by considering the delay spread to improve the robustness of the estimator in the multipath fading channels.