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Paper Abstract and Keywords
Presentation 2023-03-02 11:40
Fractional Delay Implementation Focusing on Relative Delay Difference
Haruto Nakamura, Yoji Yamada (NIT, Ishikawa College), Suguru Kameda (Hiroshima Univ.) SR2022-88
Abstract (in Japanese) (See Japanese page) 
(in English) In software defined radios, it is sometimes desired to compensate for a fixed time difference that remains between multiple signal paths that are phase-synchronized. This paper describes the results of verifying the feasibility of a delay compensation method that adds group delay to the signal path of the baseband signal and sets the relative delay difference to a desired value. In this method, the impulse response obtained by sampling the $rm{sinc}( )$ function is used to generate the group delay of arbitrary granularity. Then, based on the error criterion proposed in this paper, the realizable bandwidth and the amount of delay are clarified as the relative delay difference. Furthermore, simulation results show that the equivalent discrete-time impulse response of a two-ray fading model may contain non-causal components when a delayed wave arrives at a time that is non-integer multiple of the sampling period.
Keyword (in Japanese) (See Japanese page) 
(in English) fractional delay / relative error / relative delay difference / linear phase / causality / two-ray fading model / fractional delay two-ray fading model /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 400, SR2022-88, pp. 24-31, March 2023.
Paper # SR2022-88 
Date of Issue 2023-02-22 (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 SR2022-88

Conference Information
Committee RCS SR SRW  
Conference Date 2023-03-01 - 2023-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology, and Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SR 
Conference Code 2023-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fractional Delay Implementation Focusing on Relative Delay Difference 
Sub Title (in English)  
Keyword(1) fractional delay  
Keyword(2) relative error  
Keyword(3) relative delay difference  
Keyword(4) linear phase  
Keyword(5) causality  
Keyword(6) two-ray fading model  
Keyword(7) fractional delay two-ray fading model  
Keyword(8)  
1st Author's Name Haruto Nakamura  
1st Author's Affiliation National Institute of Technology, Ishikawa College (NIT, Ishikawa College)
2nd Author's Name Yoji Yamada  
2nd Author's Affiliation National Institute of Technology, Ishikawa College (NIT, Ishikawa College)
3rd Author's Name Suguru Kameda  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2023-03-02 11:40:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2022-88 
Volume (vol) vol.122 
Number (no) no.400 
Page pp.24-31 
#Pages 8 
Date of Issue 2023-02-22 (SR) 

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