2-Step Maximum Likelihood Channel Estimation for Multicode DS-CDMA with Frequency-Domain Equalization
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概要
- 論文の詳細を見る
Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can provide better downlink bit error rate (BER) performance of direct sequence code division multiple access (DS-CDMA) than the conventional rake combining in a frequency-selective fading channel. FDE requires accurate channel estimation. In this paper, we propose a new 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE in a very slow frequency-selective fading environment. The 1st step uses the conventional pilot-assisted MMSE-CE and the 2nd step carries out the MLCE using decision feedback from the 1st step. The BER performance improvement achieved by 2-step MLCE over pilot assisted MMSE-CE is confirmed by computer simulation.
- （社）電子情報通信学会の論文
- 2009-06-01
著者
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TAKEDA Kazuaki
Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku Unive
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KOJIMA Yohei
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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Adachi Fumiyuki
Dept. Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku University
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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. Of Electrical And Communications Engineering Graduated School Of Engineering Tohoku University
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Kojima Yohei
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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Adachi Fumiyuki
Department of communication Engineering
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