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Paper Abstract and Keywords
Presentation 2026-03-06 11:25
Open-Loop Phase and Timing Synchronization for USRP Software Defined Radio Using Phase-Only Correlation
Yoji Yamada (NIT, Ishikawa College), Suguru Kameda (Hiroshima Univ.) SR2025-103
Abstract (in Japanese) (See Japanese page) 
(in English) When setting up test and research environment for wireless systems related to PNT (Positioning, Navigation, and Timing), radios capable of establishing phase/timing synchronization across multiple channels are useful. Anticipating calibration applications in constructing such experimental equipment, the authors have proposed a method for estimating the time difference between baseband signals at arbitrary granularity using phase-only correlation. This estimation method is used to establish phase and timing synchronization between channels in the USRP X300 series software-defined radio. As an example, an experiment was conducted using an X310 equipped with two UBX daughter boards. For two demodulated baseband signals operating at carrier frequency $F_c=3.5$ GHz and baseband sampling frequency of $F_{sb}=20$ [MHz], amplitude, phase, and time difference were corrected to establish synchronization. To verify synchronization accuracy, the two demodulated signals were subtracted after synchronization was established. The signal level after subtraction decreased by $-42$ dB. This result demonstrates the synchronization accuracy of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) space-time synchronization / PNT (Positioning, Navigation and Timing) / fractional delay / fractional delay / group delay / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 388, SR2025-103, pp. 66-72, March 2026.
Paper # SR2025-103 
Date of Issue 2026-02-25 (SR) 
ISSN 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 SR2025-103

Conference Information
Committee RCS SR SRW  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo University of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SR 
Conference Code 2026-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Open-Loop Phase and Timing Synchronization for USRP Software Defined Radio Using Phase-Only Correlation 
Sub Title (in English)  
Keyword(1) space-time synchronization  
Keyword(2) PNT (Positioning, Navigation and Timing)  
Keyword(3) fractional delay  
Keyword(4) fractional delay  
Keyword(5) group delay  
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Keyword(8)  
1st Author's Name Yoji Yamada  
1st Author's Affiliation National Institute of Technology, Ishikawa College (NIT, Ishikawa College)
2nd Author's Name Suguru Kameda  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2026-03-06 11:25:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2025-103 
Volume (vol) vol.125 
Number (no) no.388 
Page pp.66-72 
#Pages 7 
Date of Issue 2026-02-25 (SR) 

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