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Paper Abstract and Keywords
Presentation 2013-05-17 13:25
Performance of Decision-Feedback Channel Estimation Using Two-Dimensional MMSE Algorithm for TDM Based Control Signals in OFDMA Downlink
Shunsuke Okaniwa (Tokyo City Univ.), Nobuhiko Miki, Teruo Kawamura (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2013-33
Abstract (in Japanese) (See Japanese page) 
(in English) We have proposed decision-feedback channel estimation (DFCE) methods using soft-symbol estimation of control signals for TDM based control channel in the orthogonal frequency division multiple access (OFDMA) downlink. In the proposed DFCE method, channel estimation accuracy is improved by using soft-symbol estimations of the control signals based on the extrinsic log-likelihood ratio (LLR) at the soft output Viterbi algorithm (SOVA) decoder output for convolutional coding in addition to the reference signals (RSs). This paper presents the average block error rate (BLER) performance of the control signals using the DFCE with 2-dimensional minimum mean-square error (MMSE) channel estimation filter in time and frequency domains for OFDMA downlink. By computer simulation evaluations, we show the DFCE with MMSE channel estimation filter in time domain improves the tracking ability against fast channel variation due to high maximum Doppler frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) mobile communications / control signals / OFDMA / decision-feedback channel estimation / MMSE channel estimation / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 37, RCS2013-33, pp. 61-66, May 2013.
Paper # RCS2013-33 
Date of Issue 2013-05-09 (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 IN  
Conference Date 2013-05-16 - 2013-05-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Internet, Multi-hop network, Mesh network, Network coding, Cross layer technique, Wireless communication, etc. 
Paper Information
Registration To RCS 
Conference Code 2013-05-RCS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance of Decision-Feedback Channel Estimation Using Two-Dimensional MMSE Algorithm for TDM Based Control Signals in OFDMA Downlink 
Sub Title (in English)  
Keyword(1) mobile communications  
Keyword(2) control signals  
Keyword(3) OFDMA  
Keyword(4) decision-feedback channel estimation  
Keyword(5) MMSE channel estimation  
1st Author's Name Shunsuke Okaniwa  
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 2013-05-17 13:25:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2013-33 
Volume (vol) IEICE-113 
Number (no) no.37 
Page pp.61-66 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2013-05-09 

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