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Paper Abstract and Keywords
Presentation 2026-03-17 15:45
Coding Scheme for q-ary Constant Weight Sequences based on the Number of Runs and Its Weight Range
Yuka Sakai, Akiko Manada (NUT) IT2025-140 ISEC2025-148 WBS2025-122 RCC2025-121
Abstract (in Japanese) (See Japanese page) 
(in English) In coding theory, a constant weight sequence is a sequence whose weight (the total value of the symbols in the sequence) is set to a constant value. Such sequences have been applied to data storage media. For example, they are expected to be applied to improve the stability of DNA storage by manipulating the ratio of Guanine to Cytosine within the DNA sequences.
Many studies on the weight range have been presented. Knuth proposed a method to encode an arbitrary binary sequence into a balanced sequence. Additionally, Swart and Weber proposed a method in which a sequence generated by a specific rule is added to the original sequence to adjust the weight of the resulting sequence. Based on the methods above, Kidu et al. proposed a method to expand the range of weights by utilizing segmentation.
These methods can be represented by adding specific sequences to the original sequence, where the added sequence has an upper bound on the number of runs (consecutive occurrences of the same symbol). Therefore, we propose a method that increases the number of runs in the specific sequences and present the weight range for the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) constant weight sequence / number of runs / weight range / balanced sequence / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 404, IT2025-140, pp. 406-411, March 2026.
Paper # IT2025-140 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 
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 IT2025-140 ISEC2025-148 WBS2025-122 RCC2025-121

Conference Information
Committee IT WBS ISEC RCC  
Conference Date 2026-03-16 - 2026-03-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagano Campus, Shinshu University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Joint Workshop of ISEC, IT, RCC, and WBS 
Paper Information
Registration To IT 
Conference Code 2026-03-IT-WBS-ISEC-RCC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Coding Scheme for q-ary Constant Weight Sequences based on the Number of Runs and Its Weight Range 
Sub Title (in English)  
Keyword(1) constant weight sequence  
Keyword(2) number of runs  
Keyword(3) weight range  
Keyword(4) balanced sequence  
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1st Author's Name Yuka Sakai  
1st Author's Affiliation Nagaoka University of Technology (NUT)
2nd Author's Name Akiko Manada  
2nd Author's Affiliation Nagaoka University of Technology (NUT)
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Speaker Author-1 
Date Time 2026-03-17 15:45:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2025-140, ISEC2025-148, WBS2025-122, RCC2025-121 
Volume (vol) vol.125 
Number (no) no.404(IT), no.405(ISEC), no.406(WBS), no.407(RCC) 
Page pp.406-411 
#Pages 6 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 

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