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Paper Abstract and Keywords
Presentation 2012-08-31 10:40
Comparative Study of Open-Loop Transmit Diversity Schemes with FourAntennas in DFT-Precoded OFDMA Using Turbo FDE and Iterative Channel Estimation
Lianjun Deng (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Hidekazu Taoka (DOCOMO Europe Labs), Mamoru Sawahashi (Tokyo City Univ.) RCS2012-115
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents comprehensive comparisons on the block error rate (BLER) performance of open-loop (OL) transmit diversity schemes with four antennas for discrete Fourier transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA). One candidate scheme employs a quasi-orthogonal (QO) - space-time block code (STBC) in which four-branch minimum mean-square error combining (MMSEC) is achieved at the cost of residual inter-code interference (ICI). Another candidate employs a combination of the STBC and selection diversity called time switched transmit diversity (TSTD) or frequency switched transmit diversity (FSTD). We apply a turbo frequency domain equalizer (FDE) associated with iterative decision-feedback channel estimation (DFCE) using soft-symbol estimation to reduce channel estimation (CE) error. The turbo FDE includes an ICI canceller to reduce the influences of the residual ICI for QO-STBC. Based on extensive link-level simulation results, we show that a combination of the STBC and TSTD (FSTD) is suitable as a four-antenna OL transmit diversity scheme for DFT-precoded OFDMA using turbo FDE and iterative DFCE.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communications / Single-carrier FDMA / Transmit diversity / STBC / Turbo FDE / channel estimation / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 192, RCS2012-115, pp. 115-120, Aug. 2012.
Paper # RCS2012-115 
Date of Issue 2012-08-23 (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 SAT RCS  
Conference Date 2012-08-30 - 2012-08-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Kochi City Cultura-Plaza CUL-PORT 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-08-SAT-RCS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparative Study of Open-Loop Transmit Diversity Schemes with FourAntennas in DFT-Precoded OFDMA Using Turbo FDE and Iterative Channel Estimation 
Sub Title (in English)  
Keyword(1) Mobile communications  
Keyword(2) Single-carrier FDMA  
Keyword(3) Transmit diversity  
Keyword(4) STBC  
Keyword(5) Turbo FDE  
Keyword(6) channel estimation  
1st Author's Name Lianjun Deng  
1st Author's Affiliation Tokyo City University (Tokyo City Univ.)
2nd Author's Name Teruo Kawamura  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Hidekazu Taoka  
3rd Author's Affiliation DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2012-08-31 10:40:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2012-115 
Volume (vol) IEICE-112 
Number (no) no.192 
Page pp.115-120 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2012-08-23 

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