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Paper Abstract and Keywords
Presentation 2013-10-25 15:55
A Study of Bit Error Rate Improving Methods Combining with Synchronous Acquisition for Digital Public Private Mobile Radio Systems Employing Heterogeneous Cognitive Radio
Masafumi Moriyama, Takeo Fujii (UEC) SR2013-74
Abstract (in Japanese) (See Japanese page) 
(in English) We have studied a heterogeneous cognitive radio system which combines digital public private mobile radio systems (DPPMRS) and commercial mobile wireless communication systems (CMWCS). The cognitive radio systems can improve bit error rate (BER) performance of the DPPMRS by receiving subsidiary information transmitted from the CMWCS when DPPMRS’s communication quality has got worse. The subsidiary information is a part of information of CMWCS． However, the problem with the cognitive radio systems is that the subsidiary information cannot be utilized when the communication quality of the DPPMRS becomes extremely poor and synchronization between DPPMRS and CMWCS is lost． For this reason, we propose an efficient method for both of assistance of timing synchronous acquisitions and BER improvements using the subsidiary information for differentially-encoded π/4 shift QPSK DPPMRS. Moreover, to evaluate the proposed method, we performed computer simulation and showed probability of obtaining the timing synchronization, jitter characteristics when the timing synchronization has been obtained and BER improvement performances.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital Public Private Mobile Radio Systems / cognitive radio / convolutional code / π/4 shift QPSK / timing synchronization / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 266, SR2013-74, pp. 123-130, Oct. 2013.
Paper # SR2013-74 
Date of Issue 2013-10-17 (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 SR2013-74

Conference Information
Committee SR  
Conference Date 2013-10-24 - 2013-10-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) technical exhibition, product exhibition, software radio equipment, radio hardware technologies, international workshop, etc. 
Paper Information
Registration To SR 
Conference Code 2013-10-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Bit Error Rate Improving Methods Combining with Synchronous Acquisition for Digital Public Private Mobile Radio Systems Employing Heterogeneous Cognitive Radio 
Sub Title (in English)  
Keyword(1) Digital Public Private Mobile Radio Systems  
Keyword(2) cognitive radio  
Keyword(3) convolutional code  
Keyword(4) π/4 shift QPSK  
Keyword(5) timing synchronization  
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1st Author's Name Masafumi Moriyama  
1st Author's Affiliation The University of Electro-communications (UEC)
2nd Author's Name Takeo Fujii  
2nd Author's Affiliation The University of Electro-communications (UEC)
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Speaker Author-1 
Date Time 2013-10-25 15:55:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2013-74 
Volume (vol) vol.113 
Number (no) no.266 
Page pp.123-130 
#Pages 8 
Date of Issue 2013-10-17 (SR) 

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