Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio(<Special Section>Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications-Part 2)
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概要
- 論文の詳細を見る
In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addition to pilot. For noise reduction and preventing the error propagation, windowing of the estimated channel impulse response in the time-delay domain is applied. The average bit error rate (BER) performance of OFDM with STTD is evaluated by computer simulation. It is found that the use of PA-DFCE can achieve a degradation in the required E_b/N_0 from ideal CE of as small as 0.6dB for an average BER=10^<-3> and requires about 2.4dB less E_b/N_0 compared to differential STTD that requires no CE.
- 2005-02-01
著者
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TAKEDA Kazuaki
Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku Unive
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Takeda Kazuaki
Tohoku Univ. Sendai‐shi Jpn
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Adachi Fumiyuki
Department Of Electrical And Communications Engineering Graduate School Of Engineering Tohoku Univer
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ISHIHARA Koichi
NTT Corporation
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Ishihara Koichi
Dept. Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku University
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Ishihara Koichi
Fluid Equipment Factory Higashimurayama Plant Nikkiso Co. Ltd.
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Ishihara Koichi
Department Of Obstetrics And Gynecology Hakuai Hospital
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Ishihara Koichi
Ntt Corp. Yokosuka‐shi Jpn
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Ishihara Koichi
Ntt Network Innovation Laboratories Ntt Corporation
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Adachi Fumiyuki
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Takeda Kazuaki
Department Of Electorical Communication Engineering Graduate School Of Engineering Tohoku University
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Takeda Kazuki
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Adachi Fumiyuki
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Adachi Fumiyuki
Department Of Electorical Communication Engineering Graduate School Of Engineering Tohoku University
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Ishihara Koichi
Department of Emergency Medicine, Gunma University Graduate School of Medicine
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Adachi Fumiyuki
Department of communication Engineering
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