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Paper Abstract and Keywords
Presentation 2021-10-07 14:25
[Poster Presentation] An Analysis of Anti-Eavesdropping Performance of Spatially-Selective Modulation using a Raytracing Channel Model
Hiroto Yonawa, Hisato Iwai, Shinsuke Ibi (Doshisha Univ.) AP2021-86
Abstract (in Japanese) (See Japanese page) 
(in English) As a physical layer anti-eavesdropping technique, we have proposed spatially-selective modulation (SSM) which uses multiple transmitting antennas and a single receiving antenna. In the technique, phase-modulated signals are transmitted from the multiple antennas so as to correctly reconstruct the signal only at the position of the legitimate receiver after spatially combining of the multiple signals. It is realized by the location dependence of a wireless channel. The previous study on SSM has used a statistical channel model assuming Rayleigh fading for the quantitative analysis of the performance. On the other hand, in this paper, a raytracing channel model is used to consider a deterministic propagation path. By using the raytracing channel model, it is possible to evaluate the performance of SSM in a viewpoint of spatial distribution of the transmitter, receiver and eavesdropper. As a specific example of possible evaluation of the model, we focus on an antenna selection system where SSM is performed by selecting limited number of transmitting antennas (4) from multiple ones (8). In the results of an analysis on the channel coefficient between the transmitting and receiving antennas, the location probability of high risk positions for eavesdropping decreases as the variance of the amplitude of the channel coefficients between multiple transmitting antennas and a single receiving antenna increases. We showed that anti-eavesdropping performance is improved by selecting the transmitting antennas based on the variance of the amplitude of the channel coefficients.
Keyword (in Japanese) (See Japanese page) 
(in English) Raytracing / Spatially-selective modulation / Antenna selection system / Anti-eavesdropping / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 191, AP2021-86, pp. 70-71, Oct. 2021.
Paper # AP2021-86 
Date of Issue 2021-09-30 (AP) 
ISSN 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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee AP  
Conference Date 2021-10-07 - 2021-10-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Student Session, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2021-10-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Analysis of Anti-Eavesdropping Performance of Spatially-Selective Modulation using a Raytracing Channel Model 
Sub Title (in English)  
Keyword(1) Raytracing  
Keyword(2) Spatially-selective modulation  
Keyword(3) Antenna selection system  
Keyword(4) Anti-eavesdropping  
1st Author's Name Hiroto Yonawa  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Hisato Iwai  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Shinsuke Ibi  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2021-10-07 14:25:00 
Presentation Time 75 minutes 
Registration for AP 
Paper # AP2021-86 
Volume (vol) vol.121 
Number (no) no.191 
Page pp.70-71 
Date of Issue 2021-09-30 (AP) 

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