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Paper Abstract and Keywords
Presentation 2009-07-30 09:55
Modulation Identification with Mean Power Variance in CDMA Wireless Communication System
Narimasa Sugimoto, Osamu Takyu, Yohtaro Umeda (Tokyo Univ. of Science), Takeo Fujii (AWCC), Masao Nakagawa (Keio Univ.) SR2009-39
Abstract (in Japanese) (See Japanese page) 
(in English) Cognitive Radio is a wireless communication system which makes it possible to use the channel resources more efficiently by exploiting the temporarily vacant resources. The nodes monitor the surrounding radio environment and detect the resources that avoid interference with the existing system in time and space to select the optimum communication system for its transmission. The information of modulation scheme is also one of the important indicators for the primary system condition. The information is available for constructing additional space channel. Recently, it is the mainstream to use code division multiple access (CDMA), orthogonal frequency division multiplexing (OFDM) for establishing multiple access channel and reducing multipath fading distortion. In this paper, the variance of mean power is used to identify the QPSK and 16QAM signals multiplexed by CDMA manner. The computer simulation shows the required condition for high accurate estimation of modulation scheme in the proposed scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive Radio / Modulation Identification / CDMA / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 155, SR2009-39, pp. 107-112, July 2009.
Paper # SR2009-39 
Date of Issue 2009-07-22 (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 SR2009-39

Conference Information
Committee SR  
Conference Date 2009-07-29 - 2009-07-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo institute of technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Exibition, reconfigurable hardware, and 10th anniversary ceremony 
Paper Information
Registration To SR 
Conference Code 2009-07-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Modulation Identification with Mean Power Variance in CDMA Wireless Communication System 
Sub Title (in English)  
Keyword(1) Cognitive Radio  
Keyword(2) Modulation Identification  
Keyword(3) CDMA  
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1st Author's Name Narimasa Sugimoto  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Osamu Takyu  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name Yohtaro Umeda  
3rd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
4th Author's Name Takeo Fujii  
4th Author's Affiliation The University of Electro-Communications (AWCC)
5th Author's Name Masao Nakagawa  
5th Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2009-07-30 09:55:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2009-39 
Volume (vol) vol.109 
Number (no) no.155 
Page pp.107-112 
#Pages 6 
Date of Issue 2009-07-22 (SR) 

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