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Paper Abstract and Keywords
Presentation 2022-07-15 10:50
Trapezoidal Block Householder Reflector and Its Application to Precoding
Hikaru Kawasaki, Takeshi Matsumura (NICT) CS2022-32
Abstract (in Japanese) (See Japanese page) 
(in English) Orthonormalization like singular value decomposition and QR decomposition is closely related to solution representation in the linear system and has wide applications. This study proposes a trapezoidal block Householder reflector to efficiently represent a unitary matrix in orthonormalization. The proposed method can save storage overheads compared to the conventional compact WY representation and the theoretical analysis proves similar properties to the orthogonal projection and pseudo-inverse matrix. As one of the applications, numerical experiments show that the proposed method can improve the computational complexity of spectral precoding without performance degradation of sidelobe suppression and error rate.
Keyword (in Japanese) (See Japanese page) 
(in English) orthonormlization / Householder transformation / basis-kernel representation / precoding / sidelobe suppression / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 110, CS2022-32, pp. 83-88, July 2022.
Paper # CS2022-32 
Date of Issue 2022-07-07 (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 CS2022-32

Conference Information
Committee CS  
Conference Date 2022-07-14 - 2022-07-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Yakushima Environmental and Cultural Village Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Next Generation Networks, Access Networks, Broadband Access, Power Line Communications, Wireless Communication Systems, Coding Systems, etc. 
Paper Information
Registration To CS 
Conference Code 2022-07-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Trapezoidal Block Householder Reflector and Its Application to Precoding 
Sub Title (in English)  
Keyword(1) orthonormlization  
Keyword(2) Householder transformation  
Keyword(3) basis-kernel representation  
Keyword(4) precoding  
Keyword(5) sidelobe suppression  
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1st Author's Name Hikaru Kawasaki  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Takeshi Matsumura  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2022-07-15 10:50:00 
Presentation Time 25 minutes 
Registration for CS 
Paper # CS2022-32 
Volume (vol) vol.122 
Number (no) no.110 
Page pp.83-88 
#Pages 6 
Date of Issue 2022-07-07 (CS) 

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