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Paper Abstract and Keywords
Presentation 2024-01-18 15:45
Chirp Index Space Partitioning Based Multiple Access Technique
Hinata Sakamoto, Koichi Adachi (UEC) IT2023-45 SIP2023-78 RCS2023-220
Abstract (in Japanese) (See Japanese page) 
(in English) With the development and diffusion of IoT technologies, demand for low-power wide-area networks (LPWANs) that enable long-distance communications with low power consumption has been increasing in recent years. LoRaWAN has attracted particular attention because it uses unlicensed frequency bands and research and development activities are active in this area. Long range wide area network (LoRaWAN) uses LoRa modulation based on chirp spread spectrum (CSS) modulation in the physical layer. While LoRaWAN is capable of low-power long-distance communication due to the LoRa modulation, its data rate is low. This paper proposes a method to improve the system data rate by dividing the chirp index space and allocating nonoverlapping subspaces to multiple terminals. Through computer simulations, we show that the proposed method improves the system data rate by up to 175 % while minimizing the degradation of signal-to-noise ratio (SNR) characteristics compared to conventional LoRa systems.
Keyword (in Japanese) (See Japanese page) 
(in English) WSN / LPWA / LoRaWAN / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 340, RCS2023-220, pp. 76-81, Jan. 2024.
Paper # RCS2023-220 
Date of Issue 2024-01-11 (IT, SIP, RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 IT2023-45 SIP2023-78 RCS2023-220

Conference Information
Committee SIP IT RCS  
Conference Date 2024-01-18 - 2024-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2024-01-SIP-IT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Chirp Index Space Partitioning Based Multiple Access Technique 
Sub Title (in English)  
Keyword(1) WSN  
Keyword(2) LPWA  
Keyword(3) LoRaWAN  
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1st Author's Name Hinata Sakamoto  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Koichi Adachi  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2024-01-18 15:45:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # IT2023-45, SIP2023-78, RCS2023-220 
Volume (vol) vol.123 
Number (no) no.338(IT), no.339(SIP), no.340(RCS) 
Page pp.76-81 
#Pages 6 
Date of Issue 2024-01-11 (IT, SIP, RCS) 

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