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Paper Abstract and Keywords
Presentation 2013-02-28 10:50
A Study of Efficient Spectrum Utilization Using Wideband Non-contiguous OFDM
Riichiro Nagareda, Akio Hasegawa, Tatsuo Shibata, Masayoshi Ohashi (ATR) SR2012-100
Abstract (in Japanese) (See Japanese page) 
(in English) Recently the demand of the mobile communication traffic increases rapidly. In order to deal with this demand, it is thought that frequency bands which have not been used yet are used. However, sufficiently large bandwidth is hardly assigned under 1~GHz which is suitable for wide-area wireless communications. Therefore, the schemes, which gather unused frequency bands fluctuated in time and frequency domains, have been studied. Non-Contiguous OFDM (Orthogonal Frequency Division Multiplexing) assigns subcarriers not to interfere with signals of other existing systems. This paper proposes Wideband Non-contiguous OFDM (WNC-OFDM) which can use the unused bands of VHF and UHF in a lump. Because WNC-OFDM executes Fast Fourier Transform (FFT) and Inverse FFT (IFFT) to the wide frequency band. This paper discusses problems of WNC-OFDM and suggests solutions for the problems. The paper also shows the results of computer simulations for clarifying the fundamental characteristics of WNC-OFDM.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive Radio / Dynamic Spectrum Access / Non-Contiguous OFDM / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 444, SR2012-100, pp. 103-108, Feb. 2013.
Paper # SR2012-100 
Date of Issue 2013-02-20 (SR) 
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 SR2012-100

Conference Information
Committee RCS SR SRW  
Conference Date 2013-02-27 - 2013-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SR 
Conference Code 2013-02-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Efficient Spectrum Utilization Using Wideband Non-contiguous OFDM 
Sub Title (in English)  
Keyword(1) Cognitive Radio  
Keyword(2) Dynamic Spectrum Access  
Keyword(3) Non-Contiguous OFDM  
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1st Author's Name Riichiro Nagareda  
1st Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
2nd Author's Name Akio Hasegawa  
2nd Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
3rd Author's Name Tatsuo Shibata  
3rd Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
4th Author's Name Masayoshi Ohashi  
4th Author's Affiliation Advanced Telecommunications Research Institute International (ATR)
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Speaker Author-1 
Date Time 2013-02-28 10:50:00 
Presentation Time 20 minutes 
Registration for SR 
Paper # SR2012-100 
Volume (vol) vol.112 
Number (no) no.444 
Page pp.103-108 
#Pages 6 
Date of Issue 2013-02-20 (SR) 

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