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Paper Abstract and Keywords
Presentation 2014-03-05 13:40
HARQ Throughput of Single-carrier MIMO Communication with Adaptive Multiplexing Order
Ryo Nagaoka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2013-383
Abstract (in Japanese) (See Japanese page) 
(in English) Multiple-input multiple-output (MIMO) transmission, which uses multiple antennas at transmitter and receiver, can increase the maximum throughput by using the spatial multiplexing or can improve the received signal-to-noise power ratio (SNR) by using the spatial diversity. In a conventional cellular network or centralized antenna network (CAN) where antennas are co-located at the base station, although the use of spatial multiplexing can increase the throughput for a user near the cell center, the throughput degrades for a user near the cell edge due not only to the path loss but also to co-channel interference (CCI) from neighboring cells. Recently, we proposed single-carrier (SC)-MIMO communication using adaptive spatial multiplexing order selection to obtain the maximum throughput achievable with the present propagation environment. For wireless packet communications, hybrid automatic repeat-request (HARQ) is essential. Also distributed antenna network (DAN), where multiple antennas are distributed in a cell, can further improve the throughput performance because the high received signal power can be obtained over the entire cell. In this paper, we propose two packet combining methods: the bit log likelihood ratio (LLR) combining for adaptive selection of multiplexing order at each re-transmission and the minimum mean square error (MMSE) based combining for using the same multiplexing order as the first transmission. We compare the HARQ throughput performance of SC-MIMO communication with adaptive multiplexing order in DAN and CAN by computer simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / adaptive multiplexing order / HARQ / distributed antenna network / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 456, RCS2013-383, pp. 463-468, March 2014.
Paper # RCS2013-383 
Date of Issue 2014-02-24 (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)
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Conference Information
Committee RCS SR SRW  
Conference Date 2014-03-03 - 2014-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2014-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) HARQ Throughput of Single-carrier MIMO Communication with Adaptive Multiplexing Order 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) adaptive multiplexing order  
Keyword(3) HARQ  
Keyword(4) distributed antenna network  
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1st Author's Name Ryo Nagaoka  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Shinya Kumagai  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Fumiyuki Adachi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2014-03-05 13:40:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2013-383 
Volume (vol) vol.113 
Number (no) no.456 
Page pp.463-468 
#Pages 6 
Date of Issue 2014-02-24 (RCS) 

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