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Paper Abstract and Keywords
Presentation 2012-01-27 10:50
Control Channel Selection Method for Improving Channel Efficiency in Cognitive Radio Systems
Mai Ohta (UEC), Sean Rocke, Jingkai Su, Alexander M. Wyglinski (WPI), Takeo Fujii (UEC) SR2011-94
Abstract (in Japanese) (See Japanese page) 
(in English) In order to share the spectrum in a cognitive radio system, it is important not only that a secondary user recognizes surrounding wireless environments but also spectrum efficiency is improved. A method that the secondary users exchange information has attracted attention in order to correctly recognize the wireless environment with distributed manner. Then an effective channel utilization method for control information and data information is required. Therefore, in this paper, a method for selecting control channel from multiple primary channels is considered, to improve the efficiency of spectrum. In general, low channel occupancy channels are utilized for secondary packet transmission from multiple white spaces (WS) to realize high reliable packet transmission. However, if the short packets like control packets are transmitted at such low channel occupancy channels, the channels are fragmented and a data packet cannot be transmitted continuously. This paper proposes a channel selection algorithm
by considering a state transition ratio and channel occupancy ratio of the primary channels, and by considering characteristics of data and control packets. The proposed method can reduce the wasted fragmented spectrum
resources for data information by multiple short control information packets. Finally, we evaluate the effectiveness of the proposed method by computer simulations.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive Radio / Control Channel / Channel Selection Algorithm / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 417, SR2011-94, pp. 101-106, Jan. 2012.
Paper # SR2011-94 
Date of Issue 2012-01-19 (SR) 
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 SR  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kagoshima 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Cognitive Radio Network, Cross Layer Technology 
Paper Information
Registration To SR 
Conference Code 2012-01-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Control Channel Selection Method for Improving Channel Efficiency in Cognitive Radio Systems 
Sub Title (in English)  
Keyword(1) Cognitive Radio  
Keyword(2) Control Channel  
Keyword(3) Channel Selection Algorithm  
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1st Author's Name Mai Ohta  
1st Author's Affiliation University of Electro-Communications (UEC)
2nd Author's Name Sean Rocke  
2nd Author's Affiliation Worcester Polytech Institute (WPI)
3rd Author's Name Jingkai Su  
3rd Author's Affiliation Worcester Polytech Institute (WPI)
4th Author's Name Alexander M. Wyglinski  
4th Author's Affiliation Worcester Polytech Institute (WPI)
5th Author's Name Takeo Fujii  
5th Author's Affiliation University of Electro-Communications (UEC)
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Date Time 2012-01-27 10:50:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2011-94 
Volume (vol) vol.111 
Number (no) no.417 
Page pp.101-106 
#Pages
Date of Issue 2012-01-19 (SR) 


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