| Presentation | 2007-07-19 An Adaptive Predistortion Method Based on Orthogonal Polynommial Expansion for Nonlinear Distortion Compensation Seiji OHMORI, GUANGSHENG Xu, Osamu MUTA, Yoshihiko AKAIWA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Adaptive predistorter is an effective technique to compensate nonlinear distortion in a power amplifier. As a method to improve the parameter convergence speed in the predistorter, a series expansion technique with an orthogonal polynomials has been proposed. In this paper, we propose an adaptive predistorter based on orthogonal polynomial for the power amplifier with memory effect, where the parameters of predistorter are determined so as to minimize out-of-band radiation components detected by high pass filter (HPF). With computer simulation using the Advanced Design System (ADS) software, we show that the adaptive predisterter using orthogonal polynomials achieves faster convergence time than that with that of non-orthogonal one, while nonlinear distortion is compensated by memory predistorter using orthogonal polynomials. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Predistorter / Orthogonal polynomial expansion / Nonlinear distortion compensation / Out-of-band radiation |
| Paper # | RCS2007-34 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2007/7/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Adaptive Predistortion Method Based on Orthogonal Polynommial Expansion for Nonlinear Distortion Compensation |
| Sub Title (in English) | |
| Keyword(1) | Predistorter |
| Keyword(2) | Orthogonal polynomial expansion |
| Keyword(3) | Nonlinear distortion compensation |
| Keyword(4) | Out-of-band radiation |
| 1st Author's Name | Seiji OHMORI |
| 1st Author's Affiliation | (Present office)NTT Network Innovation Laboratories() |
| 2nd Author's Name | GUANGSHENG Xu |
| 2nd Author's Affiliation | Graduate School of Information Science and Electrical Engineering, Kyushu University |
| 3rd Author's Name | Osamu MUTA |
| 3rd Author's Affiliation | Graduate School of Information Science and Electrical Engineering, Kyushu University |
| 4th Author's Name | Yoshihiko AKAIWA |
| 4th Author's Affiliation | Graduate School of Information Science and Electrical Engineering, Kyushu University |
| Date | 2007-07-19 |
| Paper # | RCS2007-34 |
| Volume (vol) | vol.107 |
| Number (no) | 147 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |