| Presentation | 2012-07-26 A Study on a Digital Predistortion for Multi-Band Multi-Signal Transmission of Flexible Wireless System Takayuki Yamada, Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki, Takana Kaho, Yo Yamaguchi, Kazunori Akabane, Kazuhiro Uehara, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper introduces a multi-band multi-signal transmission technology of Flexible Wireless System (FWS) for User-Centric Wireless Networks (UCWN). UCWN will allow users to make network connections easily at all times without being conscious of upgrades or differences in wireless systems. FWS is a unified wireless platform which simultaneously deals with various types of wireless signals. When FWS transmits signals of different systems simultaneously, the wideband power amplifier (PA) of FWS's transmitter amplifies the multi-band signals simultaneously. However, when multi-band transmitted signals are input to the PA, some distortion are generated due to the PA's nonlinearity. It requires a corresponding multi-band digital predistorter (PD) to compensate for the nonlinear characteristics. To realize the digital PD, in this paper, the wideband PA's nonlinear characteristics were showed using Volterra series analysis and experiments, when the wideband PA amplifies harmonically-related 2-band signals on 300MHz and 900MHz simultaneously. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Flexible Wireless System / User-centric Wireless Networks / simultaneous multi-band amplifying / digital predistortion |
| Paper # | SR2012-20 |
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| Committee | SR |
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| Conference Date | 2012/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on a Digital Predistortion for Multi-Band Multi-Signal Transmission of Flexible Wireless System |
| Sub Title (in English) | |
| Keyword(1) | Flexible Wireless System |
| Keyword(2) | User-centric Wireless Networks |
| Keyword(3) | simultaneous multi-band amplifying |
| Keyword(4) | digital predistortion |
| 1st Author's Name | Takayuki Yamada |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | Ikuma Ando |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Gia Khanh Tran |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| 4th Author's Name | Kiyomichi Araki |
| 4th Author's Affiliation | Tokyo Institute of Technology |
| 5th Author's Name | Takana Kaho |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 6th Author's Name | Yo Yamaguchi |
| 6th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 7th Author's Name | Kazunori Akabane |
| 7th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 8th Author's Name | Kazuhiro Uehara |
| 8th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2012-07-26 |
| Paper # | SR2012-20 |
| Volume (vol) | vol.112 |
| Number (no) | 153 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |