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Paper Abstract and Keywords
Presentation 2023-01-24 10:25
A Study on Bit Error Rate Improvement of Chaos Modulation By Bit Assignment Using Nonlinear Optimization Algorithm
Ryo Tozawa, Keisuke Asano, Takumi Abe, Kenta Kato, Eiji Okamoto (NIT) IT2022-30 SIP2022-81 RCS2022-209
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, the number of Internet of things (IoT) devices has increased and they are used in industrial and medical applications. In these applications, personal information and device control information are exchanged via wireless communication, making the improvement of confidentiality a challenge. As a solution to this problem, we proposed a chaos modulation with physical layer confidentiality. Chaos modulation is a type of symmetric key encryption, in which a shared key is incorporated into the modulation, so that only the receiver with the correct symmetric key can decrypt the data, thus providing physical layer confidentiality. Furthermore, chaos modulation can obtain channel coding gain in addition to physical layer confidentiality, because it generates a Gaussian-distributed chaotic signal by convolving the information bits. However, due to its cryptographic nature, chaotic modulation has the problem that the coding gain is limited because there is no correlation between the Hamming distance of the information bits and the Euclidean distance of the signal points. To solve this problem, in this paper, we propose an appropriate mapping method of chaos modulation assigning proper bits to each signal point using the simulated annealing method, which is a kind of nonlinear optimization algorithm. We show that the proposed method can achieve 1 dB channel coding gain at a point with a bit error rate of 10^(-4) for a data length of 4, compared to the existing chaotic modulation method. We also compare the proposed method with other nonlinear optimization algorithms, such as bit assignment using genetic algorithms, and show that the simulated annealing method is effective.
Keyword (in Japanese) (See Japanese page) 
(in English) physical layer security / chaos modulation / optimization algorithm / simulated annealing / genetic algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 357, RCS2022-209, pp. 7-12, Jan. 2023.
Paper # RCS2022-209 
Date of Issue 2023-01-17 (IT, SIP, RCS) 
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 IT2022-30 SIP2022-81 RCS2022-209

Conference Information
Committee IT RCS SIP  
Conference Date 2023-01-24 - 2023-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Maebashi Terrsa 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2023-01-IT-RCS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Bit Error Rate Improvement of Chaos Modulation By Bit Assignment Using Nonlinear Optimization Algorithm 
Sub Title (in English)  
Keyword(1) physical layer security  
Keyword(2) chaos modulation  
Keyword(3) optimization algorithm  
Keyword(4) simulated annealing  
Keyword(5) genetic algorithm  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryo Tozawa  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Keisuke Asano  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Takumi Abe  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Kenta Kato  
4th Author's Affiliation Nagoya Institute of Technology (NIT)
5th Author's Name Eiji Okamoto  
5th Author's Affiliation Nagoya Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2023-01-24 10:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # IT2022-30, SIP2022-81, RCS2022-209 
Volume (vol) vol.122 
Number (no) no.355(IT), no.356(SIP), no.357(RCS) 
Page pp.7-12 
#Pages 6 
Date of Issue 2023-01-17 (IT, SIP, RCS) 

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