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| Presentation | 2007-12-19 10:15 A Study on Statistical Characteristics of Signal Distortion Due to Nonlinear Amplification in OFDM Systems Masaaki Harada (KIT)  WBS2007-62 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Statistical characteristics of nonlinear distortion due to the amplification in orthogonal frequency division multiplex (OFDM) systems are investigated in this report. In OFDM systems, paralleled information symbols modulate multiple subcarriers, and then they are summed up. The signal is known to have large dynamic range and amplitude fluctuation. Such kind of signals is distorted in the amplification due to the nonlinearity of the amplifier; that results in performance degradation. The power of distorted OFDM signal may be a random variable because the effect of nonlinear amplifier depends on the shape of input signal. Due to this fact, signals normalized by sample average of distorted OFDM signal power are considered in this statistical study. Nonlinear distortions are approximated to random variables with normal distribution according to observed samples of distorted signals. Based on the approximation, the average bit error rate (BER) probability in the presence of nonlinearlity is analyzed. The validity of the approximation is verified in the numerical examples. The BER performance obtained from the analysis is compared with the one from the simulation, and good agreement is confirmed in the use of solid state power amplifier (SSPA). | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / nonlinear distortion / nonlinear amplifier / SSPA / frequency selective fading / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 396, WBS2007-62, pp. 19-24, Dec. 2007. | |
| Paper # | WBS2007-62 | |
| Date of Issue | 2007-12-12 (WBS) | |
| 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 | WBS2007-62 |
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| Conference Information | |
| Committee | WBS |
| Conference Date | 2007-12-18 - 2007-12-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | WBS |
| Conference Code | 2007-12-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Statistical Characteristics of Signal Distortion Due to Nonlinear Amplification in OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | nonlinear distortion |
| Keyword(3) | nonlinear amplifier |
| Keyword(4) | SSPA |
| Keyword(5) | frequency selective fading |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masaaki Harada |
| 1st Author's Affiliation | Kyoto Institute of Technology (KIT) |
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| Speaker | Author-1 |
| Date Time | 2007-12-19 10:15:00 |
| Presentation Time | 25 minutes |
| Registration for | WBS |
| Paper # | WBS2007-62 |
| Volume (vol) | vol.107 |
| Number (no) | no.396 |
| Page | pp.19-24 |
| #Pages | 6 |
| Date of Issue | 2007-12-12 (WBS) |
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