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Paper Abstract and Keywords
Presentation 2010-11-12 15:20
Canceling and Metric-Combining Multiuser Detection for Uplink OFDMA Packet Systems with Retransmission Control
Hideya So, Satoshi Suyama, Kazuhiko Fukawa, Hiroshi Suzuki (Tokyo Tech) RCS2010-158
Abstract (in Japanese) (See Japanese page) 
(in English) This report considers an uplink OFDMA packet mobile communication system that can multiplex plural packets of mobile stations (MSs) within the same time and frequency-band, and then proposes a multiuser detection (MUD) scheme that can combine retransmitted packets while separating multiplexed packets with low complexity. As a conventional scheme, the metric-combining MUD (MC-MUD) combines retransmitted packets by using the metric, that is the squared Euclid distance between the received signal and its replica. When packets are correctly received, the throughput of MC-MUD degrades because it cannot multiplex new packets and needs to retransmit the same packets for keeping complexity of each retransmission constant. To overcome such a problem, this report proposes canceling and metric-combining MUD (CMC-MUD) that can multiplex new packets of MSs so as to improve the throughput. CMC-MUD reduces the number of states of MLD by using replica signals of correctly received packets, and optimally combines retransmitted packets by using the metric without increasing the number of states. Computer simulations demonstrate that CMC-MUD can achieve the excellent throughput performance compared with conventional ones, and evaluate the performance of CMC-MUD with hybrid ARQ and adaptive modulation and coding.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communications / OFDMA / packet transmission / multiuser detection / retransmission / adaptive modulation and coding / hybrid ARQ /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 268, RCS2010-158, pp. 97-102, Nov. 2010.
Paper # RCS2010-158 
Date of Issue 2010-11-04 (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 RCS2010-158

Conference Information
Committee AP RCS  
Conference Date 2010-11-10 - 2010-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukui Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP, RCS 
Paper Information
Registration To RCS 
Conference Code 2010-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Canceling and Metric-Combining Multiuser Detection for Uplink OFDMA Packet Systems with Retransmission Control 
Sub Title (in English)  
Keyword(1) Mobile communications  
Keyword(2) OFDMA  
Keyword(3) packet transmission  
Keyword(4) multiuser detection  
Keyword(5) retransmission  
Keyword(6) adaptive modulation and coding  
Keyword(7) hybrid ARQ  
Keyword(8)  
1st Author's Name Hideya So  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Satoshi Suyama  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Kazuhiko Fukawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Hiroshi Suzuki  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2010-11-12 15:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2010-158 
Volume (vol) vol.110 
Number (no) no.268 
Page pp.97-102 
#Pages 6 
Date of Issue 2010-11-04 (RCS) 

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