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Paper Abstract and Keywords
Presentation 2007-06-29 15:25
Spectrum efficiency of MIMO multiplexing in a cellular environment
Koichi Adachi (Keio Univ.), Fumiyuki Adachi (Tohoku Univ.), Masao Nakagawa (Keio Univ.) RCS2007-27
Abstract (in Japanese) (See Japanese page) 
(in English) To increase the transmission rate without bandwidth expansion, multiple-input multiple-output (MIMO) technique has been attracting much attention. When MIMO technique is applied to a cellular system, the MIMO channel capacity is affected by the interference from neighboring co-channel cells. In this paper, we evaluate the outage probability of MIMO downlink channel capacity in a cellular system, taking into account the frequency-reuse factor, path loss exponent, standard deviation of shadowing loss, and base station (BS) transmit power. We discuss about the cellular spectrum efficiency. Furthermore, we compare the cellular MIMO spectrum efficiency with those of other multi-antenna transmission techniques such as space time block coded multiple-input single-output (STBC-MISO) and single-input multiple-output (SIMO). We show that the optimum frequency reuse factor is 3 irrespective of type of multi-antenna transmission scheme for the outage probability of 10 %. We also show that the cellular MIMO spectrum efficiency is always higher than those of SIMO and STBC-MISO.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / Multi-cell environment / Link capacity / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 113, RCS2007-27, pp. 97-102, June 2007.
Paper # RCS2007-27 
Date of Issue 2007-06-21 (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 RCS  
Conference Date 2007-06-28 - 2007-06-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Toyohashi Uni. of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2007-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Spectrum efficiency of MIMO multiplexing in a cellular environment 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) Multi-cell environment  
Keyword(3) Link capacity  
1st Author's Name Koichi Adachi  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Fumiyuki Adachi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Masao Nakagawa  
3rd Author's Affiliation Keio University (Keio Univ.)
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Date Time 2007-06-29 15:25:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2007-27 
Volume (vol) IEICE-107 
Number (no) no.113 
Page pp.97-102 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2007-06-21 

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