Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings[Type 1 Only]
Emergency Maintenance from Oct. 22, 2026: The system function will be limited. We apologize for the inconvenience.
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2020-03-02 13:00
[Poster Presentation] Restoration of clipped signal using oversampling based on differentiable and convex loss function
Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ. Tokyo) EA2019-126 SIP2019-128 SP2019-75
Abstract (in Japanese) (See Japanese page) 
(in English) A signal reconstruction method of clipped time-continuous signal using oversampling is proposed. The signal reconstruction problem is formulated as a minimization problem of weighted sum of a loss function between the signal and the observed data and a regularization term representing the norm of the signal. When the squared error function is used for the loss function, the objective function becomes nonconvex and nondifferentiable. To avoid this problem, we propose a convex and differentiable loss function based on a primitive function of the clipping function. Our proposed formulation can be solved by gradient descent method and majorization-minimization algorithm; we derive the update rules for these algorithms. We also show the results of the numerical experiments, which indicates that the proposed method achieved higher reconstruction
accuracy than the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) clipping / signal reconstruction / convex optimization / gradient descent method / majorization-minimization algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 440, SIP2019-128, pp. 147-152, March 2020.
Paper # SIP2019-128 
Date of Issue 2020-02-24 (EA, SIP, SP) 
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 EA2019-126 SIP2019-128 SP2019-75

Conference Information
Committee SP EA SIP  
Conference Date 2020-03-02 - 2020-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2020-03-SP-EA-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Restoration of clipped signal using oversampling based on differentiable and convex loss function 
Sub Title (in English)  
Keyword(1) clipping  
Keyword(2) signal reconstruction  
Keyword(3) convex optimization  
Keyword(4) gradient descent method  
Keyword(5) majorization-minimization algorithm  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Natsuki Ueno  
1st Author's Affiliation The University of Tokyo (Univ. Tokyo)
2nd Author's Name Shoichi Koyama  
2nd Author's Affiliation The University of Tokyo (Univ. Tokyo)
3rd Author's Name Hiroshi Saruwatari  
3rd Author's Affiliation The University of Tokyo (Univ. Tokyo)
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2020-03-02 13:00:00 
Presentation Time 90 minutes 
Registration for SIP 
Paper # EA2019-126, SIP2019-128, SP2019-75 
Volume (vol) vol.119 
Number (no) no.439(EA), no.440(SIP), no.441(SP) 
Page pp.147-152 
#Pages 6 
Date of Issue 2020-02-24 (EA, SIP, SP) 

[Return to Top Page]

[Return to IEICE Web Page]

(Line Height for English Pages: 1)
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan