Iterative Channel Estimation for Frequency-Domain Equalization of DSSS Signals(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
As the channel frequency selectivity becomes severer, the bit error rate (BER) performance of direct sequence spread spectrum (DSSS) signal transmission with rake combining degrades due to an increasing inter-path interference (IPI). Frequency-domain equalization (FDE) can replace rake combining with much improved BER performance in a severe frequency-selective fading channel. For FDE, accurate estimation of the channel transfer function is required. In this paper, we propose an iterative channel estimation that uses pilot chips which are time-multiplexed within each chip block for fast Fourier transform (FFT). The pilot acts as a cyclic-prefix of FFT block as well. The achievable BER performance is evaluated by computer simulation. It is shown that the proposed channel estimation has a very good tracking ability against fast fading.
- 社団法人電子情報通信学会の論文
- 2007-05-01
著者
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Takeda Kazuaki
Tohoku Univ. Sendai‐shi Jpn
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TAKEDA Kazuaki
Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University
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Adachi Fumiyuki
Dept. Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku University
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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
Ntt Corp. Yokosuka‐shi Jpn
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Ishihara Koichi
Ntt Network Innovation Laboratories Ntt Corporation
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Adachi Fumiyuki
Dept. Of Electrical And Commu. Eng. Graduate School Of Eng. Tohoku University
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Takeda Kazuaki
Dept. Of Electrical And 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
Dept. Electrical And Communication Engineering Graduate School Of Engineering Tohoku University
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Adachi Fumiyuki
Dept. Electrical And Communication Engineering Graduate School Of Engineering
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