IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2015-02-19 10:55
Interference reduction characteristics by circular array based massive MIMO in a real microcell environment
Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai (NTTdocomo) AP2014-189
Abstract (in Japanese) (See Japanese page) 
(in English) Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by employing a large number of antennas at a base station. Even if the interference cancellation techniques are not utilized, the interference signal can be mitigated thanks to a high beam resolution by the massive MIMO transmission using linear or planar array antenna. The authors have evaluated the effect by the massive MIMO in small cell environment using 2GHz band. In this report, we employ quantitative evaluation on the interference rejection when using a cylindrical array antenna at base station. The real propagation channel was measured in small cell environment in an urban area. One desired user and one interference user in adjacent cell are assumed to be located. We evaluate the characteristics of the interference rejection versus the number of elements in the vertical and horizontal plane. It is shown that a sufficient interference reduction using a maximum ratio combining cannot be obtained when using the cylindrical array. Moreover, it is shown that selection on the valid antennas in the horizontal plane for further improvement of transmission quality.
Keyword (in Japanese) (See Japanese page) 
(in English) massive MIMO / microcell / cylindrical array antenna / maximum ratio combining / zero forcing / channel sounder / cumulative probability distribution /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 450, AP2014-189, pp. 15-20, Feb. 2015.
Paper # AP2014-189 
Date of Issue 2015-02-12 (AP) 
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 AP2014-189

Conference Information
Committee AP  
Conference Date 2015-02-19 - 2015-02-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Chusho-kigyou center at Amagasaki-City 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation, Company special edition 
Paper Information
Registration To AP 
Conference Code 2015-02-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Interference reduction characteristics by circular array based massive MIMO in a real microcell environment 
Sub Title (in English)  
Keyword(1) massive MIMO  
Keyword(2) microcell  
Keyword(3) cylindrical array antenna  
Keyword(4) maximum ratio combining  
Keyword(5) zero forcing  
Keyword(6) channel sounder  
Keyword(7) cumulative probability distribution  
1st Author's Name Ryochi Kataoka  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Kentaro Nishimori  
2nd Author's Affiliation Niigata University (Niigata Univ.)
3rd Author's Name Ngochao Tran  
3rd Author's Affiliation NTTdocomo (NTTdocomo)
4th Author's Name Tetsuro Imai  
4th Author's Affiliation NTTdocomo (NTTdocomo)
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Speaker Author-1 
Date Time 2015-02-19 10:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2014-189 
Volume (vol) vol.114 
Number (no) no.450 
Page pp.15-20 
Date of Issue 2015-02-12 (AP) 

[Return to Top Page]

[Return to IEICE Web Page]

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan