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Paper Abstract and Keywords
Presentation 2009-07-02 14:30
A Subcarrier CNR Estimation for Power Line Multicarrier Communication
Yasuhiro Yabuuchi, Daisuke Umehara, Satoshi Denno, Masahiro Morikura (Kyoto Univ.) CS2009-21
Abstract (in Japanese) (See Japanese page) 
(in English) Indoor power line communication (PLC) is an attractive way to realize an in-home network. The bit-loaded orthogonal frequency division multiplexing (OFDM) is effective for PLC to achieve high bit rate by optimizing subcarrier modulations and code rate of a forward error correcting (FEC) code. The precise CNR information for each subcarrier should be estimated for achieving high bit rate. In particular, the subcarrier CNR information should be done within a short pilot symbol length because streaming services of voice and video are provided on
in-home PLC. At first, this manuscript shows that the precise subcarrier CNR estimation for all the range of SNR cannot be achieved within the target pilot symbol length. Next, we propose three methods to achieve target BER within the target pilot-symbol length. First one is to smooth the estimated subcarrier CNR curve, second one is to give a margin of subcarrier CNR threshold for determining subcarrier modulation, and last one is to minimize the estimated subcarrier CNR locally. As a result of evaluating these three proposed methods, it is shown that the local minimization can achieve the best performances among them. Furthermore, we show the relationship between the pilot symbol length and the range of local minimization.
Keyword (in Japanese) (See Japanese page) 
(in English) in-home power line communication / OFDM / bit loading / CNR estimation / bit rate / BER / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 116, CS2009-21, pp. 47-52, July 2009.
Paper # CS2009-21 
Date of Issue 2009-06-25 (CS) 
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 CS2009-21

Conference Information
Committee CS  
Conference Date 2009-07-02 - 2009-07-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukue Bunkakaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Next generation networks, power-line communications, wireless communication systems, etc. 
Paper Information
Registration To CS 
Conference Code 2009-07-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Subcarrier CNR Estimation for Power Line Multicarrier Communication 
Sub Title (in English)  
Keyword(1) in-home power line communication  
Keyword(2) OFDM  
Keyword(3) bit loading  
Keyword(4) CNR estimation  
Keyword(5) bit rate  
Keyword(6) BER  
Keyword(7)  
Keyword(8)  
1st Author's Name Yasuhiro Yabuuchi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Daisuke Umehara  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Satoshi Denno  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Masahiro Morikura  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2009-07-02 14:30:00 
Presentation Time 20 minutes 
Registration for CS 
Paper # CS2009-21 
Volume (vol) vol.109 
Number (no) no.116 
Page pp.47-52 
#Pages 6 
Date of Issue 2009-06-25 (CS) 

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