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Paper Abstract and Keywords
Presentation 2022-03-10 11:10
A Study on Initial Acquisition of WHCDM Signals with Roll-Off Pulse Shaping
Ojiro Komatsu, Toshiharu Kojima (UEC) IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71
Abstract (in Japanese) (See Japanese page) 
(in English) WHCDM (Walsh-Hadamard Code Division Multiplexing) is suitable for helicopter satellite communications, where rotor blades periodically block the transmission channel. In the initial acquisition of WHCDM signals with roll-off pulse shaping, acquisition performance degrades due to sampling time offset. This report proposes an improved evaluation function and parallel processing of the oversampled received signal to reduce the degradation. The computer simulation shows that the combination of proposed methods achieves the expected acquisition performance even with an oversampling factor of two.
Keyword (in Japanese) (See Japanese page) 
(in English) Walsh-Hadamard code / CDM / Initial acquisition / Roll-off pulse shaping / Sampling time offset / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 430, WBS2021-64, pp. 84-88, March 2022.
Paper # WBS2021-64 
Date of Issue 2022-03-03 (IT, ISEC, WBS, RCC) 
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 IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71

Conference Information
Committee IT ISEC RCC WBS  
Conference Date 2022-03-10 - 2022-03-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Joint Meeting of ISEC, IT, RCC, and WBS 
Paper Information
Registration To WBS 
Conference Code 2022-03-IT-ISEC-RCC-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Initial Acquisition of WHCDM Signals with Roll-Off Pulse Shaping 
Sub Title (in English)  
Keyword(1) Walsh-Hadamard code  
Keyword(2) CDM  
Keyword(3) Initial acquisition  
Keyword(4) Roll-off pulse shaping  
Keyword(5) Sampling time offset  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ojiro Komatsu  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Toshiharu Kojima  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2022-03-10 11:10:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # IT2021-96, ISEC2021-61, WBS2021-64, RCC2021-71 
Volume (vol) vol.121 
Number (no) no.428(IT), no.429(ISEC), no.430(WBS), no.431(RCC) 
Page pp.84-88 
#Pages 5 
Date of Issue 2022-03-03 (IT, ISEC, WBS, RCC) 

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