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Paper Abstract and Keywords
Presentation 2008-03-07 13:40
A Key Issue for MBWA Systems (1) -- Field Trial of OFDMA system --
Hiroshi Oguma (ITIm), Noboru Iizuka, Yasuyoshi Asano, Yoshiharu Yamazaki (Softbank Telecom), Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ.) WBS2007-105
Abstract (in Japanese) (See Japanese page) 
(in English) For mobile broadband wireless access (MBWA) field trials in urban area of Sendai city, we adopt Fast Low-latency Access with Seamless Hand-off Orthogonal Frequency Division Multiplexing (FLASH-OFDM) system based on Orthogonal Frequency Division Multiple Access (OFDMA). There are 3 cells in the field trial area. Measurement results show that downlink throughput performance is significantly degraded from 2Mbit/s to 1Mbit/s and cumulative distribution of measured signal-to-interference-and-noise ratio (SINR) is impaired about 7dB due to inter-sector interference and inter-cell interference. Since sectorization is mandatory for deployment and operation of the MBWA systems in reuse factor of 1, inter-sector interference reduction is a key issue for systems with same frequency band allocated to all cells and sectors in order to attain high spectral efficiency.
Keyword (in Japanese) (See Japanese page) 
(in English) Orthogonal Frequency Division Multiple Access (OFDMA) / inter-sector interference / inter-cell interference / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 520, WBS2007-105, pp. 5-10, March 2008.
Paper # WBS2007-105 
Date of Issue 2008-02-29 (WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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)
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Conference Information
Committee RCS AN MoNA SR WBS  
Conference Date 2008-03-05 - 2008-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WBS 
Conference Code 2008-03-RCS-AN-MoMuC-SR-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Key Issue for MBWA Systems (1) 
Sub Title (in English) Field Trial of OFDMA system 
Keyword(1) Orthogonal Frequency Division Multiple Access (OFDMA)  
Keyword(2) inter-sector interference  
Keyword(3) inter-cell interference  
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1st Author's Name Hiroshi Oguma  
1st Author's Affiliation ndustrial Institute of Technology, Miyagi Prefectural Government (ITIm)
2nd Author's Name Noboru Iizuka  
2nd Author's Affiliation Softbank Telecom (Softbank Telecom)
3rd Author's Name Yasuyoshi Asano  
3rd Author's Affiliation Softbank Telecom (Softbank Telecom)
4th Author's Name Yoshiharu Yamazaki  
4th Author's Affiliation Softbank Telecom (Softbank Telecom)
5th Author's Name Suguru Kameda  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Hiroyuki Nakase  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
7th Author's Name Tadashi Takagi  
7th Author's Affiliation Tohoku University (Tohoku Univ.)
8th Author's Name Kazuo Tsubouchi  
8th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2008-03-07 13:40:00 
Presentation Time 20 minutes 
Registration for WBS 
Paper # WBS2007-105 
Volume (vol) vol.107 
Number (no) no.520 
Page pp.5-10 
#Pages
Date of Issue 2008-02-29 (WBS) 


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