Presentation 2003/1/10
Iterative Channel Estimation Scheme by Taking the Channel States of Sub-carriers into Account in Mobile OFDM System
Atsushi MIZUKI, Chang-Jun AHN, Iwao SASASE,
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Abstract(in English) In this paper, we propose the iterative channel estimation scheme by taking the channel states ofsub-carriers into account in the mobile OFDM system. The proposed scheme separates good and bad sub-carriers by using the channel state information. When we consider, the sub-carrier of good channel conditions to estimate the channel characteristic, it is possible to reduce the iteration time for obtaining the accurate channel state information. Moreover, the proposed scheme uses the replica of the sub-carrier of good channel conditions and the weights that are calculated from the adjacent sub-carriers correlation for estimating the channel state information. Thus, our scheme can improve the system performance with averaging the channel state information of the sub-carrier of good channel conditions as well as it can reduce the effect of poor channel conditions. The performance is evaluated in term of error vector magnitude (EVM). Prom the simulation results, our proposed scheme achieves better EVM performance than the conventional iterative channel estimation scheme.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) OFDM / iterative channel estimation / channel state information / EVM
Paper # DSP2002-197,SAT2002-147,RCS2002-266
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Committee SAT
Conference Date 2003/1/10(1days)
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Registration To Satellite Telecommunications (SAT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Iterative Channel Estimation Scheme by Taking the Channel States of Sub-carriers into Account in Mobile OFDM System
Sub Title (in English)
Keyword(1) OFDM
Keyword(2) iterative channel estimation
Keyword(3) channel state information
Keyword(4) EVM
1st Author's Name Atsushi MIZUKI
1st Author's Affiliation Department of Information and Computer Science, Keio University()
2nd Author's Name Chang-Jun AHN
2nd Author's Affiliation Department of Information and Computer Science, Keio University
3rd Author's Name Iwao SASASE
3rd Author's Affiliation Department of Information and Computer Science, Keio University
Date 2003/1/10
Paper # DSP2002-197,SAT2002-147,RCS2002-266
Volume (vol) vol.102
Number (no) 548
Page pp.pp.-
#Pages 6
Date of Issue