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Paper Abstract and Keywords
Presentation 2017-06-23 10:50
Adaptive Initial Interpolation Vector Setting Method for Iterative Time-Domain Compression Method of MIMO Channel State Information
Masafumi Iizuka (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-84
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate the adaptive setting for initial interpolation vector in our previously reported iterative time-domain compression method of multiple-input multiple-output (MIMO) channel state information (CSI). The iterative MIMO-CSI compression method is based on the time-domain CSI compression with frequency-domain CSI bundling and interpolation for all combinations of transmitter and receiver antennas. In our previous work, the generation method of the initial interpolation vector, which reuse the actual frequency-domain CSI variation, was proposed in order to take into account the periodical channel variation in frequency domain. However, in this method, an appropriate length of the interpolation vector is dependent on the delay spread of the channel. In order to address this problem, this paper proposes the adaptive control of the length of the interpolation vector based on the correlation of the CSI vector in frequency domain. The numerical results show that the proposed method can further improve the accuracy of the compressed CSI or enhance the CSI compression capability of the previous method which assumes fixed length of the interpolation vector.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / beamforming / precoding / channel state information / CSI / compression / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 103, RCS2017-84, pp. 203-208, June 2017.
Paper # RCS2017-84 
Date of Issue 2017-06-14 (RCS) 
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 RCS2017-84

Conference Information
Committee RCS  
Conference Date 2017-06-21 - 2017-06-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Ishigaki Shoukou Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2017-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Adaptive Initial Interpolation Vector Setting Method for Iterative Time-Domain Compression Method of MIMO Channel State Information 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) beamforming  
Keyword(3) precoding  
Keyword(4) channel state information  
Keyword(5) CSI  
Keyword(6) compression  
1st Author's Name Masafumi Iizuka  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Kiichi Tateishi  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Kenichi Higuchi  
3rd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Date Time 2017-06-23 10:50:00 
Presentation Time 10 
Registration for RCS 
Paper # IEICE-RCS2017-84 
Volume (vol) IEICE-117 
Number (no) no.103 
Page pp.203-208 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2017-06-14 

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