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Paper Abstract and Keywords
Presentation 2013-06-13 14:50
Comparative Evaluation of Space-MIMO and Polarized-MIMO in Urban Small Cell
Kentaro Saito, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura (NTT DOCOMO) AP2013-39
Abstract (in Japanese) (See Japanese page) 
(in English) Owing to the wide spread of Long Term Evolution (LTE), the capacity of cellular system has increased. However the user traffic volume in the cellular network has been growing more rapidly due to the spreads of smart phones and tablet computers. Recently, in the crowded area such as urban railway station vicinities the capacity enhancement technique using the small-cells architecture is investigated. However the MIMO transmission performance characteristics in the urban small-cell environment, that is the low Base Station height and the low Base Station power condition, are not figured out. In addition, although there are a great number of pedestrians in the area, the influences of pedestrians to the MIMO transmission performance characteristics are not figured out. In this paper, to investigate those issues, We carried out the MIMO channel measurements in Shinagawa area and Shibuya area at 2.225 GHz band and we compared the capacity between the Space-MIMO transmission and the Polarized MIMO transmission. The experiment showed that the Polarized-MIMO transmission had an advantage in the LoS environment, while the Space-MIMO transmission had an advantage in the NLoS environment. In addition, we showed that the Space-MIMO performance became relatively higher in Shibuya area because of the phasing effect caused by the pedestrians.
Keyword (in Japanese) (See Japanese page) 
(in English) Small Cell / Space MIMO / Polarized MIMO / Urban radio propagation / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 79, AP2013-39, pp. 25-30, June 2013.
Paper # AP2013-39 
Date of Issue 2013-06-06 (AP) 
ISSN Print edition: ISSN 0913-5685    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 AP2013-39

Conference Information
Committee AP  
Conference Date 2013-06-13 - 2013-06-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2013-06-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparative Evaluation of Space-MIMO and Polarized-MIMO in Urban Small Cell 
Sub Title (in English)  
Keyword(1) Small Cell  
Keyword(2) Space MIMO  
Keyword(3) Polarized MIMO  
Keyword(4) Urban radio propagation  
Keyword(5)  
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1st Author's Name Kentaro Saito  
1st Author's Affiliation NTT DOCOMO INC. (NTT DOCOMO)
2nd Author's Name Koshiro Kitao  
2nd Author's Affiliation NTT DOCOMO INC. (NTT DOCOMO)
3rd Author's Name Tetsuro Imai  
3rd Author's Affiliation NTT DOCOMO INC. (NTT DOCOMO)
4th Author's Name Yukihiko Okumura  
4th Author's Affiliation NTT DOCOMO INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2013-06-13 14:50:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2013-39 
Volume (vol) vol.113 
Number (no) no.79 
Page pp.25-30 
#Pages 6 
Date of Issue 2013-06-06 (AP) 

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