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Paper Abstract and Keywords
Presentation 2013-09-13 09:55
A Study on Parameter Optimization for Orthogonal Polynomial Based Digital Predistortion of Concurrently Amplified Dual-band Single-carrier Signals
Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki (Tokyo Inst. of Tech.), Takayuki Yamada, Takana Kaho, Yo Yamaguchi (NTT) MW2013-91
Abstract (in Japanese) (See Japanese page) 
(in English) To realize “User-Centric Wireless Networks” which integrates various wireless systems on a unified hardware platform toward equipment miniaturization, we examine a multi-band power amplifier (PA) and digital predistortion (DPD) to compensate for nonlinear distortion. DPD is needed to track nonlinear time-varying characteristic of PA due to a change over time or a change in temperature. To compensate for this time-varying characteristic， adaptive predistorter which updates and optimizes coefficients of a polynomial expression is often used. In this adaptive predistorter, coefficients are updated to minimize adjacent channel power ratio (ACPR) or error vector magnitude (EVM) but convergence speed is slow if non-orthogonal polynomial model is applied for DPD design. Therefore, orthogonal polynomial model based on the probability distribution of input signal to PA is applied to improve the convergence speed. In this paper, we propose adaptive predistorter based on orthogonal polynomial model for dual-band single carrier signal.
Keyword (in Japanese) (See Japanese page) 
(in English) User-Centric Wireless Networks / Digital Predistortion / Orthogonal Polynomial / / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 204, MW2013-91, pp. 17-22, Sept. 2013.
Paper # MW2013-91 
Date of Issue 2013-09-05 (MW) 
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)
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Conference Information
Committee MW AP  
Conference Date 2013-09-12 - 2013-09-13 
Place (in Japanese) (See Japanese page) 
Place (in English) NHK Science Tech. Research Lab. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, mm-wave, and others 
Paper Information
Registration To MW 
Conference Code 2013-09-MW-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Parameter Optimization for Orthogonal Polynomial Based Digital Predistortion of Concurrently Amplified Dual-band Single-carrier Signals 
Sub Title (in English)  
Keyword(1) User-Centric Wireless Networks  
Keyword(2) Digital Predistortion  
Keyword(3) Orthogonal Polynomial  
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1st Author's Name Ikuma Ando  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Gia Khanh Tran  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
3rd Author's Name Kiyomichi Araki  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Takayuki Yamada  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Takana Kaho  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Yo Yamaguchi  
6th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2013-09-13 09:55:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2013-91 
Volume (vol) vol.113 
Number (no) no.204 
Page pp.17-22 
#Pages 6 
Date of Issue 2013-09-05 (MW) 

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