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Paper Abstract and Keywords
Presentation 2026-10-23 11:20
Performance Evaluation for Multi-Level PAM-Based Wireless Network Coding System in Fading Environment
Enishi Ohashi, Yusuke Kozawa, Hiromasa Habuchi (Ibaraki Univ.) WBS2026-27
Abstract (in Japanese) (See Japanese page) 
(in English) Network coding (NC) is a scheme in which a relay node applies coding
operations to multiple received packets and forwards them as a single packet,
thereby achieving higher throughput than conventional store-and-forward (SF)
relaying. Its application to wireless ad hoc networks such as VANETs
(Vehicular Ad-hoc Networks) and FANETs (Flying Ad-hoc Networks)
has therefore been studied. This paper evaluates the performance of wireless NC
employing Pulse Amplitude Modulation $M$-level (PAM-$M$)
over Rician fading channels. In particular,
the throughput of PAM-2 and PAM-4 in a butterfly network is investigated.
The results show that the maximum throughput of both SF and NC degrades as $K$,
the ratio of the direct-path component power to the scattered component power
of the received signal, decreases. However, when the ratio of the average
transmitted signal energy per bit to the noise power spectral density,
$E_{bT}/N_{0}$, is sufficiently large, NC achieves approximately 1.5 times
the throughput of SF. Furthermore, the conditions on $K$ and $E_{bT}/N_{0}$
under which NC outperforms SF are presented for PAM-2 and PAM-4.
Keyword (in Japanese) (See Japanese page) 
(in English) Network Coding / Wireless Multihop Network / Ad-hoc Network / Butterfly Network / Pulse Amplitude Modulation / Rician Fading / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 207, WBS2026-27, pp. 36-40, Oct. 2026.
Paper # WBS2026-27 
Date of Issue 2026-10-16 (WBS) 
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 WBS2026-27

Conference Information
Committee WBS  
Conference Date 2026-10-23 - 2026-10-23 
Place (in Japanese) (See Japanese page) 
Place (in English) ACT CITY HAMAMATSU 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Communication Theory, Fundamentals and Applications, etc. 
Paper Information
Registration To WBS 
Conference Code 2026-10-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation for Multi-Level PAM-Based Wireless Network Coding System in Fading Environment 
Sub Title (in English)  
Keyword(1) Network Coding  
Keyword(2) Wireless Multihop Network  
Keyword(3) Ad-hoc Network  
Keyword(4) Butterfly Network  
Keyword(5) Pulse Amplitude Modulation  
Keyword(6) Rician Fading  
Keyword(7)  
Keyword(8)  
1st Author's Name Enishi Ohashi  
1st Author's Affiliation Ibaraki University (Ibaraki Univ.)
2nd Author's Name Yusuke Kozawa  
2nd Author's Affiliation Ibaraki University (Ibaraki Univ.)
3rd Author's Name Hiromasa Habuchi  
3rd Author's Affiliation Ibaraki University (Ibaraki Univ.)
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Speaker Author-1 
Date Time 2026-10-23 11:20:00 
Presentation Time 20 minutes 
Registration for WBS 
Paper # WBS2026-27 
Volume (vol) vol.126 
Number (no) no.207 
Page pp.36-40 
#Pages 5 
Date of Issue 2026-10-16 (WBS) 

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