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Paper Abstract and Keywords
Presentation 2012-12-14 15:20
Performance of Iterative Decision-Directed Channel Estimation Using Codebook Based Transmit Diversity and Low-Rate Turbo Code for DFT-Precoded OFDMA
Keita Miwa (Tokyo City Univ.), Nobuhiko Miki, Teruo Kawamura (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2012-229
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents the average block error rate (BLER) performance using iterative decision-directed channel estimation (IDDCE) when using a codebook based transmit diversity and low-rate turbo code for discrete Fourier transform (DFT)-precoded orthogonal frequency division multiple access (OFDMA). When using codebook transmit diversity and low-rate turbo code, required average received SNR satisfying the target average BLER becomes below 0 dB. In the case, increasing channel estimation error using reference signal (RS) hinders the decrease in the required average received SNR. Hence, we apply IDDCE to derive actual gains of transmit diversity and low-rate turbo code. Computer simulation results show that when the turbo code with R = 1/15 (1/9) and the constraint length of K = 4 bits is used, the required average received SNR at the average BLER of 10-2 using the IDDCE with the number of iterations of 5 is decreased by approximately 1.2 dB compared to that for the RS based channel estimation. We also show that the required average received SNR using IDDCE is decreased by approximately 4.4 and 5.8 dB for R = 1/9 and 1/15, respectively, compared to that for R = 1/3.
Keyword (in Japanese) (See Japanese page) 
(in English) single-carrier FDMA / low-rate turbo code / transmit diversity / channel estimation / DFT-precoded OFDMA / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 351, RCS2012-229, pp. 275-280, Dec. 2012.
Paper # RCS2012-229 
Date of Issue 2012-12-06 (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)
Download PDF RCS2012-229

Conference Information
Committee NS RCS  
Conference Date 2012-12-13 - 2012-12-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network 
Paper Information
Registration To RCS 
Conference Code 2012-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance of Iterative Decision-Directed Channel Estimation Using Codebook Based Transmit Diversity and Low-Rate Turbo Code for DFT-Precoded OFDMA 
Sub Title (in English)  
Keyword(1) single-carrier FDMA  
Keyword(2) low-rate turbo code  
Keyword(3) transmit diversity  
Keyword(4) channel estimation  
Keyword(5) DFT-precoded OFDMA  
1st Author's Name Keita Miwa  
1st Author's Affiliation Tokyo City University (Tokyo City Univ.)
2nd Author's Name Nobuhiko Miki  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Teruo Kawamura  
3rd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2012-12-14 15:20:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2012-229 
Volume (vol) IEICE-112 
Number (no) no.351 
Page pp.275-280 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2012-12-06 

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