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Paper Abstract and Keywords
Presentation 2013-06-20 10:40
An impact of reduced pilot signals on capacity of a multiuser MIMO system with distributed antennas
Yuki Nakanishi, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa (Hokkaido Univ.) RCS2013-46
Abstract (in Japanese) (See Japanese page) 
(in English) A distributed antenna system, where antennas of a base station are spatially distributed over the cell, can improve throughput at the cell edge compared to a centralized antenna system. In a multiuser multiple-input multiple-output (MIMO) system, we can obtain higher sum capacity by increasing the number of antennas per distributed base station. However, the large number of total antenna elements requires the same or larger number of pilot sequences to estimate the channel gains. In this paper, we propose pilot signal sharing to reduce the number of pilot signals, and the impact of the pilot signal sharing on the sum capacity is evaluated. From computer simulations, it is shown that inter-user interference due to the wrong channel information can be suppressed at a certain sharing condition.
Keyword (in Japanese) (See Japanese page) 
(in English) distributed antenna system / multiuser MIMO / channel capacity / pilot signal / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 93, RCS2013-46, pp. 55-60, June 2013.
Paper # RCS2013-46 
Date of Issue 2013-06-13 (RCS) 
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 RCS2013-46

Conference Information
Committee RCS  
Conference Date 2013-06-20 - 2013-06-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
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 2013-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An impact of reduced pilot signals on capacity of a multiuser MIMO system with distributed antennas 
Sub Title (in English)  
Keyword(1) distributed antenna system  
Keyword(2) multiuser MIMO  
Keyword(3) channel capacity  
Keyword(4) pilot signal  
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1st Author's Name Yuki Nakanishi  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Toshihiko Nishimura  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Takeo Ohgane  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
4th Author's Name Yasutaka Ogawa  
4th Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2013-06-20 10:40:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2013-46 
Volume (vol) vol.113 
Number (no) no.93 
Page pp.55-60 
#Pages 6 
Date of Issue 2013-06-13 (RCS) 

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