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Paper Abstract and Keywords
Presentation 2013-10-18 10:55
Performance of Turbo FDE Using Two-Dimensional LMMSE Based Iterative Decision-Directed Channel Estimation for DFT-Precoded OFDMA
Chihiro Mori (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Nobuhiko Miki (Kagawa Univ.), Mamoru Sawahashi (Tokyo City Univ.) RCS2013-161
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents the average block error rate (BLER) performance for linear minimum mean-square error (LMMSE) based iterative decision-directed channel estimation (IDDCE) associated with the turbo frequency domain equalizer (FDE) for discrete Fourier transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA). In the proposed IDDCE, estimated channel responses, which are used for weights of feed-forward and decision feedback FDEs, are iteratively updated using an accurate 2-dimensional LMMSE algorithm at each iteration of the turbo FDE. Through computer simulations, we clarify the best window size for the 2-dimensional LMMSE algorithm assuming the 9-path Extended Typical Urban (ETU) channel model and the maximum Doppler frequency of up to approximately 220 Hz. The computer simulations show that the 2-dimensional LMMSE based IDDCE is effective in decreasing the required average received signal-to-noise power ratio (SNR) satisfying the target average BLER for the turbo FDE in a frequency-selective Rayleigh fading channel with low-to-high maximum Doppler frequencies and with a wide range of root mean square delay spread values.
Keyword (in Japanese) (See Japanese page) 
(in English) single-carrier FDMA / DFT-precoded OFDMA / turbo FDE / LMMSE channel estimation / iterative channel estimation / Max-Log-MAP decoder / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 246, RCS2013-161, pp. 109-114, Oct. 2013.
Paper # RCS2013-161 
Date of Issue 2013-10-10 (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 2013-10-17 - 2013-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Sophia Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, etc. 
Paper Information
Registration To RCS 
Conference Code 2013-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance of Turbo FDE Using Two-Dimensional LMMSE Based Iterative Decision-Directed Channel Estimation for DFT-Precoded OFDMA 
Sub Title (in English)  
Keyword(1) single-carrier FDMA  
Keyword(2) DFT-precoded OFDMA  
Keyword(3) turbo FDE  
Keyword(4) LMMSE channel estimation  
Keyword(5) iterative channel estimation  
Keyword(6) Max-Log-MAP decoder  
1st Author's Name Chihiro Mori  
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 Nobuhiko Miki  
3rd Author's Affiliation Kagawa University (Kagawa Univ.)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2013-10-18 10:55:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2013-161 
Volume (vol) IEICE-113 
Number (no) no.246 
Page pp.109-114 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2013-10-10 

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