Paper Abstract and Keywords |
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 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 |
Link to ES Tech. Rep. Archives: MW2006-134 |
Conference Information |
Committee |
MW |
Conference Date |
2006-11-21 - 2006-11-22 |
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(See Japanese page) |
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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 |
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Keyword(1) |
Predistortion |
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Power amplifier |
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Linearization |
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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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Speaker |
Author-1 |
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 |
6 |
Date of Issue |
2006-11-14 (MW) |