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
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 2026-03-17 10:15
A Study on Code Design for Polar-Based Multilevel Coded Modulation
Toshiki Morino, Takumi Takahashi, Hideki Ochiai (Osaka Univ.) IT2025-115 ISEC2025-123 WBS2025-97 RCC2025-96
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, we examine design methods for multi-level coded modulation (MLC) systems that are based on polar codes. The Gaussian approximation (GA) and the reciprocal channel approximation (RCA) are two low-complexity polar code design methods for binary AWGN channels. The GA is based on the mean of bit-channel log-likelihood ratios, while the RCA is based on the mutual information of those channels. Nevertheless, the application of these methods to nonuniform channels, such as those encountered by the bits of multilevel modulation symbols, can result in a substantial performance degradation due to model mismatch. Consequently, we first examine an RCA-based design method that is based on the modification of design SNR for the scenario in which all levels are decoded by successive cancellation decoding (SCD) at the receiver. Moreover, through numerical simulations, we demonstrate that there is potential for enhancement in the selection of the design SNR when the decoder of the lowest level channel at the receiver is replaced by a more powerful decoding algorithm.
Keyword (in Japanese) (See Japanese page) 
(in English) Polar codes / multi-level coded modulation / successive cancellation decoding / design SNR / reciprocal channel approximation (RCA) / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 406, WBS2025-97, pp. 232-237, March 2026.
Paper # WBS2025-97 
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 IT2025-115 ISEC2025-123 WBS2025-97 RCC2025-96

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 WBS 
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) A Study on Code Design for Polar-Based Multilevel Coded Modulation 
Sub Title (in English)  
Keyword(1) Polar codes  
Keyword(2) multi-level coded modulation  
Keyword(3) successive cancellation decoding  
Keyword(4) design SNR  
Keyword(5) reciprocal channel approximation (RCA)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Toshiki Morino  
1st Author's Affiliation The University of Osaka (Osaka Univ.)
2nd Author's Name Takumi Takahashi  
2nd Author's Affiliation The University of Osaka (Osaka Univ.)
3rd Author's Name Hideki Ochiai  
3rd Author's Affiliation The University of Osaka (Osaka Univ.)
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 2026-03-17 10:15:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # IT2025-115, ISEC2025-123, WBS2025-97, RCC2025-96 
Volume (vol) vol.125 
Number (no) no.404(IT), no.405(ISEC), no.406(WBS), no.407(RCC) 
Page pp.232-237 
#Pages 6 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan