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Paper Abstract and Keywords
Presentation 2013-03-07 15:30
Performance Comparison of OFDMA and SC-FDMA with Clipping and Filtering
Nguyen Huu Bao Trung, Hideki Ochiai (Yokohama National Univ.) IT2012-86 ISEC2012-104 WBS2012-72
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, orthogonal frequency-division multiple access (OFDMA) has been considered as a promis- ing candidate for next-generation mobile communications due to its robustness against multipath fading and high bandwidth efficiency. However, the OFDMA signal has a critical drawback that the peak-to-average power ratio (PAPR) is very high compared to conventional single-carrier signals. For these reasons OFDMA is not considered suitable for battery-driven mobile terminals. In this paper, we analyze the performances of the clipping and filtering (CAF) based PAPR reduction scheme for both the single-carrier frequency-division multiple access (SC-FDMA) and OFDMA systems in terms of peak power reduction capability and degradation in terms of bit error rate (BER). The clipping is performed on the baseband SC-FDMA and OFDMA signals with and without oversampling, follow by the ideal low-pass filter. First, the effect of the envelope clipping power on the PAPR of the band-limited SC-FDMA and OFDMA is studied. We then discuss the BER performances of the oversampled and clipped SC-FDMA and OFDMA signals over the additive white Gaussian noise (AWGN) channels. It is shown that the SNR penalty due to clipping can be considerably alleviated by using channel coding, which is justified by the simulation results using the low-density parity-check (LDPC) code.
Keyword (in Japanese) (See Japanese page) 
(in English) SC-FDMA / OFDMA / BER / PAPR / Reduction / Clipping / Filtering / LDPC coding  
Reference Info. IEICE Tech. Rep., vol. 112, no. 462, WBS2012-72, pp. 155-160, March 2013.
Paper # WBS2012-72 
Date of Issue 2013-02-28 (IT, ISEC, WBS) 
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 IT2012-86 ISEC2012-104 WBS2012-72

Conference Information
Committee IT ISEC WBS  
Conference Date 2013-03-07 - 2013-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Kwansei Gakuin Univ., Osaka-Umeda Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To WBS 
Conference Code 2013-03-IT-ISEC-WBS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Comparison of OFDMA and SC-FDMA with Clipping and Filtering 
Sub Title (in English)  
Keyword(1) SC-FDMA  
Keyword(2) OFDMA  
Keyword(3) BER  
Keyword(4) PAPR  
Keyword(5) Reduction  
Keyword(6) Clipping  
Keyword(7) Filtering  
Keyword(8) LDPC coding  
1st Author's Name Nguyen Huu Bao Trung  
1st Author's Affiliation Yokohama National University (Yokohama National Univ.)
2nd Author's Name Hideki Ochiai  
2nd Author's Affiliation Yokohama National University (Yokohama National Univ.)
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Speaker Author-1 
Date Time 2013-03-07 15:30:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # IT2012-86, ISEC2012-104, WBS2012-72 
Volume (vol) vol.112 
Number (no) no.460(IT), no.461(ISEC), no.462(WBS) 
Page pp.155-160 
#Pages 6 
Date of Issue 2013-02-28 (IT, ISEC, WBS) 

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