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Paper Abstract and Keywords
Presentation 2018-11-22 14:55
[Invited Lecture] Ray trace analysis of compact cubic arrangement Massive MIMO antenna
Kosei Oikawa, Naoki Honma, Kazunori Yuri (Iwate Univ.), Kentaro Nishimori (Niigata Univ.) AP2018-138 RCS2018-213
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, with the spread of smartphones and tablets, the amount of data traffic continues to increase even for wireless communication. The massive MIMO (Multiple-Input Multiple-Output) technology is actively reported recently because the frequency resource needs to be efficiently used. In this report, we propose a new antenna configuration where the size of the base station antenna is significantly reduced by use of cubic antenna arrangement and orthogonal polarizations, which is suitable for the indoor environment. The ray trace analysis is carried out for investigating the capacity when the proposed base station antenna is used in an indoor environment. BD (Block diagonalization) method is used to evaluate multiuser performance. As a result, we found that the cubic antenna improves the multiuser channel capacity by 22 bits/s/Hz and 8 bits/s/Hz from the planar and the linear antennas respectively when the number of users is 7.
Keyword (in Japanese) (See Japanese page) 
(in English) Massive MIMO / Ray trace analysis / BD method / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 310, AP2018-138, pp. 203-207, Nov. 2018.
Paper # AP2018-138 
Date of Issue 2018-11-13 (AP, 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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF AP2018-138 RCS2018-213

Conference Information
Committee RCS AP  
Conference Date 2018-11-20 - 2018-11-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To AP 
Conference Code 2018-11-RCS-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Ray trace analysis of compact cubic arrangement Massive MIMO antenna 
Sub Title (in English)  
Keyword(1) Massive MIMO  
Keyword(2) Ray trace analysis  
Keyword(3) BD method  
1st Author's Name Kosei Oikawa  
1st Author's Affiliation Iwate University (Iwate Univ.)
2nd Author's Name Naoki Honma  
2nd Author's Affiliation Iwate University (Iwate Univ.)
3rd Author's Name Kazunori Yuri  
3rd Author's Affiliation Iwate University (Iwate Univ.)
4th Author's Name Kentaro Nishimori  
4th Author's Affiliation Niigata University (Niigata Univ.)
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Speaker Author-1 
Date Time 2018-11-22 14:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2018-138, RCS2018-213 
Volume (vol) vol.118 
Number (no) no.310(AP), no.311(RCS) 
Page pp.203-207(AP), pp.199-203(RCS) 
Date of Issue 2018-11-13 (AP, RCS) 

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