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Paper Abstract and Keywords
Presentation 2007-08-24 14:30
Performance evaluation of pre-FFT type MMSE adaptive array antenna using iterative weight update for OFDM transmission with asynchronous intra-system interference
Kazuto Yano, Makoto Taromaru (ATR) RCS2007-69
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, the authors have proposed a pre-FFT type MMSE adaptive array antenna (AAA) for an OFDM packet transmission system to suppress asynchronous inter-system interference. It controls the antenna weight so as to minimize the mean square error between its outputs of two periods in which the same waveform should be received, and it iterates the weight updating process in an OFDM symbol so as to converge the weight rapidly. It has already been shown that the proposed AAA is effective to suppress asynchronous inter-system interference. On the other hand, if intra-system interference arrives, it is expected that the performance of the proposed AAA is sensitive to its arrival timing. Therefore, in this paper, the performance of the proposed AAA with intra-system interference is evaluated through computer simulations assuming an exponentially decaying $12$-path LOS fading channel, a $3$-element circular array, and the IEEE 802.11a data packet transmission. Simulation results reveal that the average packet error rate of the proposed AAA with an intra-system interference signal is better than or comparable to that with an inter-system interference signal when the time lag between the interference arrival and the OFDM symbol timing of the desired signal is longer than about $13\,\%$ of the OFDM symbol duration.
Keyword (in Japanese) (See Japanese page) 
(in English) adaptive array antenna / intra-system interference / OFDM / pre-FFT type / indoor LOS propagation / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 192, RCS2007-69, pp. 93-98, Aug. 2007.
Paper # RCS2007-69 
Date of Issue 2007-08-16 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2007-69

Conference Information
Committee RCS AN  
Conference Date 2007-08-23 - 2007-08-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Niigata University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2007-08-RCS-AN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance evaluation of pre-FFT type MMSE adaptive array antenna using iterative weight update for OFDM transmission with asynchronous intra-system interference 
Sub Title (in English)  
Keyword(1) adaptive array antenna  
Keyword(2) intra-system interference  
Keyword(3) OFDM  
Keyword(4) pre-FFT type  
Keyword(5) indoor LOS propagation  
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1st Author's Name Kazuto Yano  
1st Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
2nd Author's Name Makoto Taromaru  
2nd Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
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Speaker Author-1 
Date Time 2007-08-24 14:30:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2007-69 
Volume (vol) vol.107 
Number (no) no.192 
Page pp.93-98 
#Pages 6 
Date of Issue 2007-08-16 (RCS) 

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