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Paper Abstract and Keywords
Presentation 2017-12-14 13:30
[Poster Presentation] Acoustic Communications Employing Differential OFDM
Yusuke Matsumoto, Masashi Takemura, Souichiro Morita, Akinobu Murayama, Takuma Yamagishi, Hiroshi Kubo (Ritsumeikan Univ.) WBS2017-51 ITS2017-28 RCC2017-67
Abstract (in Japanese) (See Japanese page) 
(in English) This paper discusses OFDM (Orthogonal Frequency Division Multiplexing) with differential encoding assuming on acoustic communications. Acoustic waves increase the influence of maximum Doppler frequency and delay spread due to the slow propagation speed compared to radio waves. Therefore, acoustic communications has a serious issue in order to cope with time and frequency selective channels, i.e., double selective channels. It is well known that OFDM suppresses effect of ISI (inter-symbol interference) caused by delay spread. For the double selective channels, this paper compares FDDE (frequency domain differential encoding) which performs differential encoding in frequency domain with TDDE (time domain differential encoding) which performs differential encoding in time domain. Finally, computer simulation results confirm that delay spread degrades the performance of FDDE and TDDE has better performance compared with FDDE on double selective fading channels.
Keyword (in Japanese) (See Japanese page) 
(in English) Acoustic Communications / Orthogonal Frequency Division Multiplexing / Differential Encoding / Differential Detection / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 346, WBS2017-51, pp. 89-93, Dec. 2017.
Paper # WBS2017-51 
Date of Issue 2017-12-07 (WBS, ITS, RCC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF WBS2017-51 ITS2017-28 RCC2017-67

Conference Information
Committee ITS WBS RCC  
Conference Date 2017-12-14 - 2017-12-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Tiruru/Okinawa Jichikaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Reliable Communication and Control, Rader and Sensing, etc. 
Paper Information
Registration To WBS 
Conference Code 2017-12-ITS-WBS-RCC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Acoustic Communications Employing Differential OFDM 
Sub Title (in English)  
Keyword(1) Acoustic Communications  
Keyword(2) Orthogonal Frequency Division Multiplexing  
Keyword(3) Differential Encoding  
Keyword(4) Differential Detection  
1st Author's Name Yusuke Matsumoto  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Masashi Takemura  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Souichiro Morita  
3rd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
4th Author's Name Akinobu Murayama  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
5th Author's Name Takuma Yamagishi  
5th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
6th Author's Name Hiroshi Kubo  
6th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Date Time 2017-12-14 13:30:00 
Presentation Time 120 
Registration for WBS 
Paper # IEICE-WBS2017-51,IEICE-ITS2017-28,IEICE-RCC2017-67 
Volume (vol) IEICE-117 
Number (no) no.346(WBS), no.347(ITS), no.348(RCC) 
Page pp.89-93 
#Pages IEICE-5 
Date of Issue IEICE-WBS-2017-12-07,IEICE-ITS-2017-12-07,IEICE-RCC-2017-12-07 

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