DocumentCode
3046532
Title
Robust pilot-aided channel estimator for time-varying OFDM channels
Author
Vigelis, Rui F. ; Cavalcante, Charles C.
Author_Institution
Wireless Telecommun. Res. Group (GTEL), Fed. Univ. of Ceara, Fortaleza
fYear
2008
fDate
6-9 July 2008
Firstpage
506
Lastpage
510
Abstract
This paper deals with time-varying channel estimation in orthogonal frequency division multiplexing (OFDM) systems by means of pilot-aided strategies. A robust estimator which does not depend on the channel statistics is proposed. The derivation is based on a constrained filtering approach and particular cases are analyzed. Simulation results are provided in order to verify the better performance of the proposal when compared to estimators reported in the literature.
Keywords
OFDM modulation; channel estimation; fading channels; constrained filtering approach; fading channel; orthogonal frequency division multiplexing; pilot-aided channel estimator; robust estimator; time-varying OFDM channels; Filtering algorithms; Frequency estimation; Low pass filters; OFDM; Proposals; Robustness; Statistics; Time varying systems; Time-varying channels; Wiener filter;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Advances in Wireless Communications, 2008. SPAWC 2008. IEEE 9th Workshop on
Conference_Location
Recife
Print_ISBN
978-1-4244-2045-2
Electronic_ISBN
978-1-4244-2046-9
Type
conf
DOI
10.1109/SPAWC.2008.4641659
Filename
4641659
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