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Paper Abstract and Keywords
Presentation 2008-07-17 09:50
PAPR Reduction Methods for Eigenmode MIMO-OFDM Systems
Hiroto Adachi, Satoshi Suyama, Hiroshi Suzuki, Kazuhiko Fukawa (Tokyo Inst. Tech.) RCS2008-33
Abstract (in Japanese) (See Japanese page) 
(in English) This report proposes methods that can reduce peak-to-average power ratio (PAPR) while maintaining performance improvement by linear precoding for eigenmode MIMO-OFDM mobile communications. In the eigenmode MIMO-OFDM system, a transmitter performs linear precoding using channel state information (CSI) and thus excellent transmission performance can be achieved. However, the transmitted signal still has high PAPR because of OFDM characteristics. To reduce such PAPR, this report enhances selected mapping (SLM) and partial transmit sequence (PTS) which are known as PAPR reduction methods for OFDM. The enhanced methods, which are referred to as eigenmode transmission SLM (EM-SLM) and eigenmode transmission PTS (EM-PTS), can be applied to the eigenmode MIMO-OFDM without any performance degradation. In addition, three methods to send optimal phase pattern information (OPPI) to the receiver are investigated for EM-SLM and EM-PTS. Computer simulations demonstrate that the proposed methods using 16 phase patterns can drastically reduce PAPR in 4 $\times$ 4 eigenmode MIMO-OFDM. Furthermore, performances of the OPPI transmission methods are compared, and packet error rates of both EM-SLM and EM-PTS with OPPI transmission are evaluated.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communication / MIMO-OFDM / Eigenmode / SLM / PTS / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 135, RCS2008-33, pp. 7-12, July 2008.
Paper # RCS2008-33 
Date of Issue 2008-07-10 (RCS) 
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 RCS2008-33

Conference Information
Committee RCS NS  
Conference Date 2008-07-17 - 2008-07-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2008-07-RCS-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) PAPR Reduction Methods for Eigenmode MIMO-OFDM Systems 
Sub Title (in English)  
Keyword(1) Mobile communication  
Keyword(2) MIMO-OFDM  
Keyword(3) Eigenmode  
Keyword(4) SLM  
Keyword(5) PTS  
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1st Author's Name Hiroto Adachi  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. Tech.)
2nd Author's Name Satoshi Suyama  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. Tech.)
3rd Author's Name Hiroshi Suzuki  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. Tech.)
4th Author's Name Kazuhiko Fukawa  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. Tech.)
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Speaker Author-1 
Date Time 2008-07-17 09:50:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2008-33 
Volume (vol) vol.108 
Number (no) no.135 
Page pp.7-12 
#Pages 6 
Date of Issue 2008-07-10 (RCS) 

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