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Paper Abstract and Keywords
Presentation 2015-07-30 10:30
[Poster Presentation] A Study of Feedback for Channel State Information in Multiple-Input Multiple-Output Eigenbeam Space Division Multiplexing
Yusuke Dohi, Tetsushi Ikegami (Meiji Univ.) RCC2015-24 NS2015-44 RCS2015-107 SR2015-25 ASN2015-34
Abstract (in Japanese) (See Japanese page) 
(in English) A degraded communication performance from feedback delay has been recognized in multiple-input multiple-output (MIMO) eigenbeam space-division multiplexing (E-SDM) in time-varying channel. In this study, degraded communication performance by increased phase angle variation velocities is reported because the transmission weight becomes increasingly sensitive to smaller gaps between eigenvalues. In addition, it is indicated that the communication performance is improved in MIMO E-SDM based on adaptive control of the channel feedback time period by using the eigenvalue gap as an input parameter. The adaptive control is more effective in the case of increasing spatial correlation.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / E-SDM / Time-varying channel / Feedback delay / Close Eigenvalues / Spatial correlations / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 160, RCS2015-107, pp. 37-42, July 2015.
Paper # RCS2015-107 
Date of Issue 2015-07-22 (RCC, RCS, SR, ASN), 2015-07-23 (NS) 
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 RCC2015-24 NS2015-44 RCS2015-107 SR2015-25 ASN2015-34

Conference Information
Committee RCC ASN RCS NS SR  
Conference Date 2015-07-29 - 2015-07-31 
Place (in Japanese) (See Japanese page) 
Place (in English) JA Naganoken Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Distributed Network, M2M: Machine-to-Machine, D2D (Device-to-Device),etc. 
Paper Information
Registration To RCS 
Conference Code 2015-07-RCC-ASN-RCS-NS-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Feedback for Channel State Information in Multiple-Input Multiple-Output Eigenbeam Space Division Multiplexing 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) E-SDM  
Keyword(3) Time-varying channel  
Keyword(4) Feedback delay  
Keyword(5) Close Eigenvalues  
Keyword(6) Spatial correlations  
1st Author's Name Yusuke Dohi  
1st Author's Affiliation Meiji University (Meiji Univ.)
2nd Author's Name Tetsushi Ikegami  
2nd Author's Affiliation Meiji University (Meiji Univ.)
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Date Time 2015-07-30 10:30:00 
Presentation Time 90 
Registration for RCS 
Paper # IEICE-RCC2015-24,IEICE-NS2015-44,IEICE-RCS2015-107,IEICE-SR2015-25,IEICE-ASN2015-34 
Volume (vol) IEICE-115 
Number (no) no.158(RCC), no.159(NS), no.160(RCS), no.161(SR), no.162(ASN) 
Page pp.35-40(RCC), pp.39-44(NS), pp.37-42(RCS), pp.53-58(SR), pp.75-80(ASN) 
#Pages IEICE-6 
Date of Issue IEICE-RCC-2015-07-22,IEICE-NS-2015-07-23,IEICE-RCS-2015-07-22,IEICE-SR-2015-07-22,IEICE-ASN-2015-07-22 

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