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Presentation 2006-11-21 14:15
Adaptive Digital Predistortion Linearizer for High Power Amplifiers
Marzieh Dashti (Amirkabir Univ.of Tech/Tokyo Inst of Tech), Abbas Mohammadi (Amirkabir Univ. of Tech), Jun-ichi Takada (Tokyo Inst. of Tech.) Link to ES Tech. Rep. Archives: MW2006-134
Abstract (in Japanese) (See Japanese page) 
(in English) M-QAM modulation has been considered to achieve high bandwidth efficiency for wireless communications. However, due to its envelope fluctuation, it exhibits large spectral regrowth when power amplifier (PA) operates in nonlinear region close to saturation. in this study, an adaptive predistorter (PD) algorithm, based on look-up table (LUT), is introduced to linearize PA. The algorithm is implemented for a measured Class AB HPA. Adjacent Channel Power Ratio (ACPR) is used as a criterion to evaluate the PD performance. Output spectrum with and without PD are compared for 16-QAM input signal. A nearly 20 dB improvement in ACPR is obtained by using PD.
Keyword (in Japanese) (See Japanese page) 
(in English) Predistortion / Power amplifier / Linearization / ACPR / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 369, MW2006-134, pp. 17-22, Nov. 2006.
Paper # MW2006-134 
Date of Issue 2006-11-14 (MW) 
ISSN Print edition: ISSN 0913-5685
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 Link to ES Tech. Rep. Archives: MW2006-134

Conference Information
Committee MW  
Conference Date 2006-11-21 - 2006-11-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To MW 
Conference Code 2006-11-MW 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Adaptive Digital Predistortion Linearizer for High Power Amplifiers 
Sub Title (in English)  
Keyword(1) Predistortion  
Keyword(2) Power amplifier  
Keyword(3) Linearization  
Keyword(4) ACPR  
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1st Author's Name Marzieh Dashti  
1st Author's Affiliation Amirkabir University of Technology/Tokyo Institute of Technology (Amirkabir Univ.of Tech/Tokyo Inst of Tech)
2nd Author's Name Abbas Mohammadi  
2nd Author's Affiliation Amirkabir University of Technology (Amirkabir Univ. of Tech)
3rd Author's Name Jun-ichi Takada  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
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Date Time 2006-11-21 14:15:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2006-134 
Volume (vol) vol.106 
Number (no) no.369 
Page pp.17-22 
#Pages
Date of Issue 2006-11-14 (MW) 


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