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Paper Abstract and Keywords
Presentation 2011-12-16 10:00
Spectrum Efficiency of MIMO Spatial Multiplexing in a Multi-cell Distributed Antenna Network
Shinya Kumagai, Ryusuke Matsukawa, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2011-251
Abstract (in Japanese) (See Japanese page) 
(in English) Multiple-input multiple-output (MIMO) spatial multiplexing can increase the transmission rate without bandwidth expansion. However, in cellular networks (CNs), the transmission rate of a user close to the cell edge significantly degrades because the received signal-to-interference plus noise power ratio (SINR) degrades due to the presence of strong co-channel interference (CCI) from neighboring cells. Distributed antenna network (DAN), in which many antennas are spatially distributed over the cell, is suitable for MIMO spatial multiplexing because the received SINR improves over the entire cell. In this paper, we discuss the impact of the frequency reuse factor on the downlink channel capacity of DAN-MIMO spatial multiplexing in a multi-cell environment and compare the channel capacity with CN. Assuming the block transmission with cyclic prefix (CP), we derive a channel capacity expression and then, derive the optimal transmit power allocation for DAN-MIMO spatial multiplexing. We evaluate the channel capacity distribution by Monte Carlo numerical computation method to show that DAN can reduce the frequency reuse factor and achieves higher cell channel capacity compared to CN.
Keyword (in Japanese) (See Japanese page) 
(in English) distributed antenna / MIMO spatial multiplexing / spectrum efficiency / multi-cell environment / frequency-selective channel / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 345, RCS2011-251, pp. 111-116, Dec. 2011.
Paper # RCS2011-251 
Date of Issue 2011-12-08 (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)
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Conference Information
Committee NS RCS  
Conference Date 2011-12-15 - 2011-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network 
Paper Information
Registration To RCS 
Conference Code 2011-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Spectrum Efficiency of MIMO Spatial Multiplexing in a Multi-cell Distributed Antenna Network 
Sub Title (in English)  
Keyword(1) distributed antenna  
Keyword(2) MIMO spatial multiplexing  
Keyword(3) spectrum efficiency  
Keyword(4) multi-cell environment  
Keyword(5) frequency-selective channel  
1st Author's Name Shinya Kumagai  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Ryusuke Matsukawa  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Tatsunori Obara  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Tetsuya Yamamoto  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Fumiyuki Adachi  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
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Date Time 2011-12-16 10:00:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2011-251 
Volume (vol) IEICE-111 
Number (no) no.345 
Page pp.111-116 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2011-12-08 

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