| Presentation | 2020-08-21 [Encouragement Talk] A Fundamental Study Toward the Software Defined Satellite Shigenori Tani, Yasutaka Yamashita, Michiya Hayama, Masatake Hangai, Hiroshi Aruga, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The software defined satellite (SDS) improves frequency utilization to control resources such as time, frequency, and space by using fully digitalized onboard processor. In addition, SDS enables satellite communication and observation operators to provide ability to customize their services in a satellite life time. In order to realize SDS, functional restriction due to the analogue devices should be avoided to alternate analogue processing with digital as much as possible. Also, if we use commercial grade devices attracting higher processing speed at a modest price than space grade devices even though less resilient, soft error mitigation techniques are important. Therefore, this paper shows some fundamental techniques toward the SDS. Firstly, the direct digital transmission technique utilizing delta-sigma modulation is proposed to omit multi-bit digital-to-analog convertor and mixer. In addition, this paper shows novel parallel circuit design to improve signal discontinuity. Secondary, error robust technique utilizing stochastic computing is proposed. In this paper, design results of digital channelizer with stochastic computing and Signal to Noise power Ratio (SNR) performance under the soft error environment are provided. Finally, this paper proposes novel error tolerance digital processing technique which restores distorted signals utilizing Convolutional Neural Network De-noising Auto Encoder (CNN DAE). In the proposal, CNN DAE learns a representation for a set of data by training the neural network to minimize signal noise, then the output is selected from restored signal or original signal appropriately to avoid representation error. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Software Defined Satellite / Delta-Sigma modulation / Stochastic Computing / CNN DAE / Soft error |
| Paper # | SAT2020-20 |
| Date of Issue | 2020-08-13 (SAT) |
| Conference Information | |
| Committee | SAT / RCS |
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| Conference Date | 2020/8/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hisashi Sujikai(NHK) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Hiroyasu Ishikawa(Nihon Univ.) / Tetsushi Ikegami(Meiji Univ.) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Hiroyasu Ishikawa(NHK) / Tetsushi Ikegami(KDDI Research) / Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(NEC) / Tomoya Tandai |
| Assistant | Takuya Okura(NICT) / Daisuke Goto(NTT) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Encouragement Talk] A Fundamental Study Toward the Software Defined Satellite |
| Sub Title (in English) | |
| Keyword(1) | Software Defined Satellite |
| Keyword(2) | Delta-Sigma modulation |
| Keyword(3) | Stochastic Computing |
| Keyword(4) | CNN DAE |
| Keyword(5) | Soft error |
| 1st Author's Name | Shigenori Tani |
| 1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 2nd Author's Name | Yasutaka Yamashita |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 3rd Author's Name | Michiya Hayama |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 4th Author's Name | Masatake Hangai |
| 4th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| 5th Author's Name | Hiroshi Aruga |
| 5th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Electric) |
| Date | 2020-08-21 |
| Paper # | SAT2020-20 |
| Volume (vol) | vol.120 |
| Number (no) | SAT-129 |
| Page | pp.pp.53-57(SAT), |
| #Pages | 5 |
| Date of Issue | 2020-08-13 (SAT) |