On a Novel Pre-FFT OFDM Adaptive Antenna Array for Delayed Signal Suppression(Wireless Communication Technology)
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概要
- 論文の詳細を見る
It is well known that Orthogonal Frequency Division Multiplexing (OFDM) scheme is robust to frequency selective fading in wireless channels. However, once delayed signals beyond a guard interval of an OFDM symbol are introduced in a channel with large delay spread, inter-symbol interference causes a severe degradation in the transmission performance. In this paper, we propose a novel pre-Fast Fourier Transform (FFT) OFDM adaptive antenna array, which requires only one FFT processor at a receiver, for suppressing such delayed signals. We analytically derive the optimum weights for the beam former based on the Maximum Signal-to-Noise-and-Interference power Ratio (SNIR) and the Minimum Mean Square Error (MMSE) criteria, respectively. Computer simulation results show its good performance even in a channel where Directions of Arrival (DoAs) of arriving waves are randomly determined.
- 社団法人電子情報通信学会の論文
- 2003-06-01
著者
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Hara Shinsuke
Graduate School Of Engineering Osaka University
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Hara S
The Department Of Electronic Information And Energy Engineering Graduate School Of Engineering Osaka
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Hara Shinsuke
Graduate School Of Engineering Osaka City University
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Hara Y
Mitsubishi Electric Information Technology Centre Europe B. V. (ite)
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BUDSABATHON Montree
Fabrinet Co. Ltd.
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HANE Shuichi
Tokyo Electric Power Company
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HARA Yoshitaka
Information Technology R&D Center, Mitsubishi Electric Corporation
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Hara Yoshitaka
Information Technology R&d Center Mitsubishi Electric Corporation
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Hara Yoshitaka
Information Technology R & D Center Mitsubishi Electric Corporation
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Budsabathon M
Fabrinet Co. Ltd.
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Hara Shinsuke
Osaka City Univ.
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