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Paper Abstract and Keywords
Presentation 2009-06-26 09:20
Investigations on Constant-Rate ARQ Using Multiple Transmitter Antennas for Multicast Channel
Masao Iwasaki, Kenichi Higuchi (Tokyo Univ. of Sci.) RCS2009-39
Abstract (in Japanese) (See Japanese page) 
(in English) This paper investigates an constant-rate automatic repeat request (ARQ) for multicast transmissions in the cellular system, in order to improve the transmission quality especially for the terminals near the cell edge. The constant-rate property is important for the multicast transmission, since the predetermined data rate is needed to be kept using given spectrum and transmission power regardless of the use of retransmission. The proposed ARQ scheme utilizes the multiple transmission antennas for achieving the constant-rate ARQ. When we transmit initial packet only, the space time block code (STBC) transmission is used for reliable transmission via space diversity, while the space division multiplexing (SDM) is applied when the initial and retransmission packets are transmitted simultaneously. From the simulation results, the proposed ARQ scheme reduces the required signal-to-noise ratio (SNR) for achieving target bit error rate (BER) comparing to the case without ARQ, especially when the target BER is low such as below 10-4.
Keyword (in Japanese) (See Japanese page) 
(in English) Multicast / ARQ / MIMO / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 105, RCS2009-39, pp. 67-70, June 2009.
Paper # RCS2009-39 
Date of Issue 2009-06-18 (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 RCS2009-39

Conference Information
Committee RCS  
Conference Date 2009-06-25 - 2009-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya University 
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 2009-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigations on Constant-Rate ARQ Using Multiple Transmitter Antennas for Multicast Channel 
Sub Title (in English)  
Keyword(1) Multicast  
Keyword(2) ARQ  
Keyword(3) MIMO  
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1st Author's Name Masao Iwasaki  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Sci.)
2nd Author's Name Kenichi Higuchi  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Sci.)
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Speaker Author-1 
Date Time 2009-06-26 09:20:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2009-39 
Volume (vol) vol.109 
Number (no) no.105 
Page pp.67-70 
#Pages 4 
Date of Issue 2009-06-18 (RCS) 

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