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Paper Abstract and Keywords
Presentation 2025-03-06 11:45
Direction of Arrival Estimation of OTFS Signals Using a Phased Array Antenna
Takato Masui, Yutaka Jitsumatsu (Kyushu Univ.) CAS2024-108 CS2024-94
Abstract (in Japanese) (See Japanese page) 
(in English) Orthogonal Time-Frequency Space (OTFS) modulated signals have been attracting attention as a promising modulation scheme for Integrated Sensing and Communication (ISAC). In particular, OTFS has been primarily studied for its ability to facilitate channel equalization in doubly selective fading environments. However, in recent years, research on its radar applications has also been gaining momentum. In this context, we recently proposed a method for estimating delay and Doppler shifts in OTFS-based pulse radar. While our previous proposal assumed a single antenna, extending it to a phased array antenna is desirable to improve sensing performance.

One advantage of using a phased array antenna is that beamforming enhances spatial resolution, enabling direction-of-arrival (DOA) estimation. Additionally, communication performance improvements can be expected by utilizing techniques such as spatial division multiple access (SDMA).

In this paper, we conduct direction-of-arrival estimation using OTFS signals with a receiver equipped with a phased array antenna. The incoming waves are echo signals, reflecting the OTFS radar's transmitted signals. We report simulation results using classical MUSIC and ESPRIT methods.
Keyword (in Japanese) (See Japanese page) 
(in English) Direction of Arrival (DoA) Estimation / , MUSIC / ESPRIT / Orthogonal Time-Frequency Space (OTFS) modulation / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 416, CS2024-94, pp. 25-30, March 2025.
Paper # CS2024-94 
Date of Issue 2025-02-27 (CAS, CS) 
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 CAS2024-108 CS2024-94

Conference Information
Committee CAS CS  
Conference Date 2025-03-06 - 2025-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network processor, Signal processing and circuits for communications, Wireless LAN / PAN, etc. 
Paper Information
Registration To CS 
Conference Code 2025-03-CAS-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Direction of Arrival Estimation of OTFS Signals Using a Phased Array Antenna 
Sub Title (in English)  
Keyword(1) Direction of Arrival (DoA) Estimation  
Keyword(2) , MUSIC  
Keyword(3) ESPRIT  
Keyword(4) Orthogonal Time-Frequency Space (OTFS) modulation  
Keyword(5)  
Keyword(6)  
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Keyword(8)  
1st Author's Name Takato Masui  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Yutaka Jitsumatsu  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2025-03-06 11:45:00 
Presentation Time 25 minutes 
Registration for CS 
Paper # CAS2024-108, CS2024-94 
Volume (vol) vol.124 
Number (no) no.415(CAS), no.416(CS) 
Page pp.25-30 
#Pages 6 
Date of Issue 2025-02-27 (CAS, CS) 

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