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Paper Abstract and Keywords
Presentation 2008-03-06 14:55
Improvement of BER Performance in OFDM Systems with PAPR Reduction
Hirofumi Matsuzawa, Hisato Iwai, Hideichi Sasaoka (Doshisha Univ.) RCS2007-223
Abstract (in Japanese) (See Japanese page) 
(in English) A major drawback of orthogonal frequency division multiplexing (OFDM) systems has traditionally been their high peak-to-average power ratio (PAPR). To overcome this problem, a number of techniques have been developed. The clipping and filtering is one of the most effective techniques to reduce PAPR. However, the clipping and filtering technique has a problem to generate a non-linear distortion which involves a degradation of signal quality. The over-clipping and filtering technique is more effective to reduce PAPR and a non-linear distortion, but the degradation of the signal quality is unavoidable. In this paper, we analyze the degradation due to the over-clipping and filtering based on clipping and filtering theory, and propose a quasi-maximum likelihood estimation method having reduced complexity to improve bit error rate (BER) performance . As a result, we can obtain a low PAPR and good BER erformance by combining the over-clipping and filtering and the quasi-maximum ikelihood estimation.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / PAPR / Over-clipping / Quasi-maximum likelihood estimation / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 518, RCS2007-223, pp. 223-228, March 2008.
Paper # RCS2007-223 
Date of Issue 2008-02-27 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 RCS2007-223

Conference Information
Committee RCS AN MoNA SR WBS  
Conference Date 2008-03-05 - 2008-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2008-03-RCS-AN-MoMuC-SR-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of BER Performance in OFDM Systems with PAPR Reduction 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) PAPR  
Keyword(3) Over-clipping  
Keyword(4) Quasi-maximum likelihood estimation  
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1st Author's Name Hirofumi Matsuzawa  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Hisato Iwai  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Hideichi Sasaoka  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2008-03-06 14:55:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2007-223 
Volume (vol) vol.107 
Number (no) no.518 
Page pp.223-228 
#Pages 6 
Date of Issue 2008-02-27 (RCS) 

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