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Paper Abstract and Keywords
Presentation 2010-03-05 13:40
Improvement of Power Added Efficiency by PAPR Reductiuon Technique for MIMO-OFDM Systems
Yosuke Kanno, Satoshi Suyama, Hiroshi Suzuki, Kazuhiko Fukawa (Tokyo Inst. of Tech.) RCS2009-331
Abstract (in Japanese) (See Japanese page) 
(in English) In MIMO-OFDM mobile communication systems, this report clarifies a relation between (i) an improvement of peak to average power ratio (PAPR) reduction by subcarrier phase hopping select mapping (SPH-SLM) and (ii) power added efficiency (PAE) of a transmit power amplifier (PA). Although MIMO-OFDM can realize the high-speed and reliable transmission, it suffers from high PAPR characteristics. For reducing such PAPR, SPH-SLM, which can improve both the transmission performance and the PAPR reduction of the transmitted signal, has been proposed. When the PAPR-reduced signal by SPH-SLM is passed into a nonlinear PA, computer simulations have evaluated the spectrum characteristic and the packet transmission performance. However, the improvement of PAE by SPH-SLM has not been clarified. This report shows a relation between the amount of backoff of PA and PAE by circuit simulations when the PAPR-reduced signal by SPH-SLM is fed into a Doherty PA. It also shows an effect of the PAPR reduction by SPH-SLM on out-of-band spectrum characteristics and error vector magnitude (EVM), and evaluates the transmission performance by a transmission system simulation that includes radio propagation channels. From the measured relation between the backoff, EVM, and PAE, it is shown that the PAPR reduction by SPH-SLM can improve PAE of 12\% under the almost same EVM condition.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communication / subcarrier phase hopping / PAPR / PAE / RF circuit simulation / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 440, RCS2009-331, pp. 433-438, March 2010.
Paper # RCS2009-331 
Date of Issue 2010-02-24 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2009-331

Conference Information
Committee RCS AN MoNA SR  
Conference Date 2010-03-03 - 2010-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2010-03-RCS-AN-MoMuC-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of Power Added Efficiency by PAPR Reductiuon Technique for MIMO-OFDM Systems 
Sub Title (in English)  
Keyword(1) Mobile communication  
Keyword(2) subcarrier phase hopping  
Keyword(3) PAPR  
Keyword(4) PAE  
Keyword(5) RF circuit simulation  
1st Author's Name Yosuke Kanno  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Satoshi Suyama  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
3rd Author's Name Hiroshi Suzuki  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Kazuhiko Fukawa  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
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Date Time 2010-03-05 13:40:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2009-331 
Volume (vol) IEICE-109 
Number (no) no.440 
Page pp.433-438 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2010-02-24 

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