| Presentation | 2000/2/18 Influence of transmitting amplifier nonlinearity to multichannel 4PSK transmission Taro UMEHARA, Kazuhiro MIYAUCHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As a first step of investigation on frequency-power efficiency of digital radio employing nonlinear transmitting amplifiers, performance of a multichannel 4PSK system is analyzed with the following conclusion. OQPSK is optimum modulation scheme in a system with low frequency efficiency. With high frequency efficiency, QPSK, OQPSK and π / 4QPSK have almost same power efficiency. The power efficiency decreases generally with the increasing frequency efficiency. In a system using the optimum modulation scheme, decrease of power efficiency due to increase of frequency efficiency is large in a high SNR system in which linearization of transmitting amplifier gives improvement of power efficiency. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | nonlinear transmitting amplifier / multichannel 4PSK system / signal to distortion ratio / optimum modulation scheme / frequency-power efficiency |
| Paper # | SST99-82,ITS99-78,A・P99-204,RCS99-224,MW99-244 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2000/2/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Influence of transmitting amplifier nonlinearity to multichannel 4PSK transmission |
| Sub Title (in English) | |
| Keyword(1) | nonlinear transmitting amplifier |
| Keyword(2) | multichannel 4PSK system |
| Keyword(3) | signal to distortion ratio |
| Keyword(4) | optimum modulation scheme |
| Keyword(5) | frequency-power efficiency |
| 1st Author's Name | Taro UMEHARA |
| 1st Author's Affiliation | Department of Electrical Engineering, Science University of Tokyo() |
| 2nd Author's Name | Kazuhiro MIYAUCHI |
| 2nd Author's Affiliation | Department of Electrical Engineering, Science University of Tokyo |
| Date | 2000/2/18 |
| Paper # | SST99-82,ITS99-78,A・P99-204,RCS99-224,MW99-244 |
| Volume (vol) | vol.99 |
| Number (no) | 632 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |