| Presentation | 2004/10/14 Channel Transmission Characteristics of Onboard Frequency Domain Processing for Multiple Beam Mobile Satellites(On-Board Processing and Resource Allocation)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) Shunichiro EGAMI, Taka-aki SUZUKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, in multiple beam mobile satellite systems, onboard frequency domain switching (FDS) is applied enabling flexible large capacity routing. In this paper, channel transmission characteristics are investigated for FDS. At first, overlap and save operation and concept of FDS are explained. Selecting a channel is performed by selecting frequency samples. Transmission characteristics and required number of samples par channel are investigated. It was shown that out of band characteristics are determined by the truncation time window. In this procedure, in order to improve out of band characteristics, additional weighting by cosine roll-off time window matched with the overlap and save operation is proposed. It is shown that by the proposed window, which does not affect signal transmission, out of band characteristics can be conspicuously improved. Finally QPSK transmission characteristics are also investigated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital signal processing / frequency domain switching / FDS / multiple beam / mobile satellite / FFT |
| Paper # | SAT2004-131 |
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| Committee | SAT |
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| Conference Date | 2004/10/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Channel Transmission Characteristics of Onboard Frequency Domain Processing for Multiple Beam Mobile Satellites(On-Board Processing and Resource Allocation)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) |
| Sub Title (in English) | |
| Keyword(1) | Digital signal processing |
| Keyword(2) | frequency domain switching |
| Keyword(3) | FDS |
| Keyword(4) | multiple beam |
| Keyword(5) | mobile satellite |
| Keyword(6) | FFT |
| 1st Author's Name | Shunichiro EGAMI |
| 1st Author's Affiliation | Shizuoka University() |
| 2nd Author's Name | Taka-aki SUZUKI |
| 2nd Author's Affiliation | Toshiba Tec Imaging and Information Systems Inc |
| Date | 2004/10/14 |
| Paper # | SAT2004-131 |
| Volume (vol) | vol.104 |
| Number (no) | 351 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |