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Paper Abstract and Keywords
Presentation 2010-03-02 10:30
Considerations on Adaptive Array Antenna with Equalization Suppressing Multipath beyond the Gard Interval in the OFDM System
Masataka Umeda, Takanori Iwamatsu (Fujitsu Labs.), Koichiro Wakasugi (Kyouto Inst. of Tech.) CAS2009-112 SIP2009-157 CS2009-107
Abstract (in Japanese) (See Japanese page) 
(in English) Adaptive Array Antenna (AAA) can shape its beam to suppress interference signals, so it can receive only the desired signal. For this reason, the AAA is often used for OFDM (Orthogonal Frequency Division Multiplexing) systems in suppressing delay signals locating outside of the guard interval. This AAA’s interference suppression performance is strongly influenced by the direction of the desired signal as well as that of the interference signals. When the interference signal comes close to the desired signal, it results in a poor performance. In this report, we propose an AAA system and a pre-FFT equalizer is equipped for each array element. The pre-FFT equalizer is a kind of equalizer to suppress the interference signal in time-domain, and we can expect the interference suppression even if the desired and interference signals come from the same direction. We have evaluated the proposed AAA system with pre-FFT equalizer by a computer simulation. The results show that an excellent performance can still be achieved when the interference signal comes very close to the desired signal.
Keyword (in Japanese) (See Japanese page) 
(in English) Equalization / Adaptive Array Antenna / OFDM / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 436, CS2009-107, pp. 197-202, March 2010.
Paper # CS2009-107 
Date of Issue 2010-02-22 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Download PDF CAS2009-112 SIP2009-157 CS2009-107

Conference Information
Committee SIP CAS CS  
Conference Date 2010-03-01 - 2010-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Hotel Breeze Bay Marina, Miyakojima 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal processing for networking and communications, and others 
Paper Information
Registration To CS 
Conference Code 2010-03-SIP-CAS-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Considerations on Adaptive Array Antenna with Equalization Suppressing Multipath beyond the Gard Interval in the OFDM System 
Sub Title (in English)  
Keyword(1) Equalization  
Keyword(2) Adaptive Array Antenna  
Keyword(3) OFDM  
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1st Author's Name Masataka Umeda  
1st Author's Affiliation Fujitsu Laboratories (Fujitsu Labs.)
2nd Author's Name Takanori Iwamatsu  
2nd Author's Affiliation Fujitsu Laboratories (Fujitsu Labs.)
3rd Author's Name Koichiro Wakasugi  
3rd Author's Affiliation Kyoto Institute of Technology (Kyouto Inst. of Tech.)
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Speaker Author-1 
Date Time 2010-03-02 10:30:00 
Presentation Time 20 minutes 
Registration for CS 
Paper # CAS2009-112, SIP2009-157, CS2009-107 
Volume (vol) vol.109 
Number (no) no.434(CAS), no.435(SIP), no.436(CS) 
Page pp.197-202 
#Pages
Date of Issue 2010-02-22 (CAS, SIP, CS) 


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