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Paper Abstract and Keywords
Presentation 2023-05-12 10:15
Gradient flow decoding for LDPC codes
Tadashi Wadayama, Kensho Nakajima, Ayano Nakai-Kasai (NiTech) IT2023-8 EMM2023-8
Abstract (in Japanese) (See Japanese page) 
(in English) The power consumption of the integrated circuit is becoming a significant burden, particularly for large-scale signal processing problems requiring high throughput. The decoding process of LDPC codes is a heavy signal processing task that demands power efficiency and higher decoding throughput.
A promising approach to reducing the power and latency of a decoding process is to use an analog circuit instead of a digital circuit.
This paper investigates a continuous-time gradient flow-based approach for decoding LDPC codes, which employs a potential energy function similar to the objective function used in the gradient descent bit flipping (GDBF) algorithm. We experimentally demonstrate that the decoding performance of the gradient flow decoding
is comparable to that of the multi-bit mode GDBF algorithm.
Since an analog circuit of the gradient flow decoding requires only analog arithmetic operations and an integrator,
future advancements in programmable analog integrated circuits may make practical implementation feasible.
Keyword (in Japanese) (See Japanese page) 
(in English) LDPC codes / continuous-time dynamical system / gradient flow / analog computing / ordinary differential equations / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 14, IT2023-8, pp. 37-42, May 2023.
Paper # IT2023-8 
Date of Issue 2023-05-04 (IT, EMM) 
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 IT2023-8 EMM2023-8

Conference Information
Committee EMM IT  
Conference Date 2023-05-11 - 2023-05-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Rakuyu Kaikan (Kyoto Univ. Yoshida-South Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information Security, Information Theory, Information Hiding, etc. 
Paper Information
Registration To IT 
Conference Code 2023-05-EMM-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Gradient flow decoding for LDPC codes 
Sub Title (in English)  
Keyword(1) LDPC codes  
Keyword(2) continuous-time dynamical system  
Keyword(3) gradient flow  
Keyword(4) analog computing  
Keyword(5) ordinary differential equations  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Tadashi Wadayama  
1st Author's Affiliation Nagoya Institute of Technology (NiTech)
2nd Author's Name Kensho Nakajima  
2nd Author's Affiliation Nagoya Institute of Technology (NiTech)
3rd Author's Name Ayano Nakai-Kasai  
3rd Author's Affiliation Nagoya Institute of Technology (NiTech)
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Speaker Author-1 
Date Time 2023-05-12 10:15:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2023-8, EMM2023-8 
Volume (vol) vol.123 
Number (no) no.14(IT), no.15(EMM) 
Page pp.37-42 
#Pages 6 
Date of Issue 2023-05-04 (IT, EMM) 

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