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Paper Abstract and Keywords
Presentation 2016-07-20 12:30
[Poster Presentation] An Effective Shift Value Set for Blind Estimation in CSS-OFDM System
Takahiro Kitazawa, Kouji Ohuchi (Shizuoka Univ.) WBS2016-16 MICT2016-17
Abstract (in Japanese) (See Japanese page) 
(in English) OFDM (Orthogonal Frequency Division Multiplexing) signals often have high PAPR (Peak to Average Power Ratio), which causes non-linear distortion at the non-linear HPA (high power amplifier). As one of the PAPR reduction schemes, CSS (Cyclic Shifted Sequences) scheme was proposed. In CSS scheme, subcarriers which constitute an OFDM signal are partitioned into some clusters. Then we give some independent cyclic shifts to the time-domain signals of each cluster individually in order to find out an OFDM signal with the lowest PAPR. We transmit the resulting signal from the transmitter. When using CSS scheme, however, we need to transmit side information about the cyclic shift to the receiver as well. Although a blind method to estimate the side information at the receiver was also proposed, its computational complexity increases as not only the number of subcarriers but also multi-level modulation degree increases. In this paper, to overcome this drawback, we consider to decrease the number of subcarriers used for the estimation of side information. This paper shows that we accomplish almost the same bit error rate as the conventional scheme with half the number of subcarriers if selecting appropriate shift value set and subcarriers. We also investigate the shift value set which reduces PAPR effectively.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / PAPR / CSS / Blind Estimation / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 140, WBS2016-16, pp. 27-32, July 2016.
Paper # WBS2016-16 
Date of Issue 2016-07-13 (WBS, MICT) 
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 WBS2016-16 MICT2016-17

Conference Information
Committee MICT WBS  
Conference Date 2016-07-20 - 2016-07-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Ｔｏｋyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Poster Session, Wideband System, Healthcare and Medical Information Communication Technologies, etc. 
Paper Information
Registration To WBS 
Conference Code 2016-07-MICT-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Effective Shift Value Set for Blind Estimation in CSS-OFDM System 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) PAPR  
Keyword(3) CSS  
Keyword(4) Blind Estimation  
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1st Author's Name Takahiro Kitazawa  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Kouji Ohuchi  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Speaker Author-1 
Date Time 2016-07-20 12:30:00 
Presentation Time 120 minutes 
Registration for WBS 
Paper # WBS2016-16, MICT2016-17 
Volume (vol) vol.116 
Number (no) no.140(WBS), no.141(MICT) 
Page pp.27-32 
#Pages 6 
Date of Issue 2016-07-13 (WBS, MICT) 

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