Presentation 2003/1/15
MMSE Method for Multi-Rayleigh Fading Channel Estimation in OFDM System
Dongguo LI, Matumi YAMASITA,
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Abstract(in English) In mobile OFDM system, due to the Doppler shift, the orthogonality of sub-carriers will be broken that results in ICI. In order to compensate the ICI, we need to obtain the transfer function of the channel precisely. Unlike the previously proposed linear interpolation method which is based on the linear assumption of channel during a block period, this paper proposes a new approach which uses a group of pilot symbols in time domain to find the best estimation of the channel according to MMSE (minimum mean-squared error) criterion. Then we can reconstruct the transmitted OFDM signal in frequency domain. The validity of the proposed estimator is demonstrated by computer simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) OFDM / Doppler Shift / Rayleigh fading / MMSE
Paper # CAS2002-111
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Committee CAS
Conference Date 2003/1/15(1days)
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Registration To Circuits and Systems (CAS)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) MMSE Method for Multi-Rayleigh Fading Channel Estimation in OFDM System
Sub Title (in English)
Keyword(1) OFDM
Keyword(2) Doppler Shift
Keyword(3) Rayleigh fading
Keyword(4) MMSE
1st Author's Name Dongguo LI
1st Author's Affiliation Graduate School of Engineering,Osaka Prefecture University()
2nd Author's Name Matumi YAMASITA
2nd Author's Affiliation Graduate School of Engineering,Osaka Prefecture University
Date 2003/1/15
Paper # CAS2002-111
Volume (vol) vol.102
Number (no) 572
Page pp.pp.-
#Pages 5
Date of Issue