| Presentation | 2004/10/14 Evaluation of interference from UWB devices into FSS systems and new technical approach of satellite system using wideband spreading signals(System Engineering II)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) Naoki FUKE, Takeo OHSEKI, Hisato IWAI, Mitsuo NOHARA, Nobuyuki KAWAI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, the effect of interference from ultra-wideband (UWB) devices into Fixed Satellite Service (FSS) systems is evaluated. Some examples of the methodologies for the evaluation are also presented. UWB devices are expected to achieve high-speed short-range communication for a number of applications, and technologies for UWB devices are being studied at standardization bodies. In contrast to their benefits, the emissions from UWB devices would cause harmful interference into the existing FSS systems. We evaluate the magnitude of aggregate interference into the uplink and downlink of the FSS systems. The results of the most studies so far indicate that the interference into the downlink in 4/7GHz band is more critical as compared to the interference into the uplink in 6/8GHz band. These results were sent to the special Task Group at ITU-R which considers technical issues to facilitate the study on the compatibility between UWB devices and radiocommunication services. Furthermore, a new technical approach to explore new satellite services using wideband spreading signals, which operate within frequency bands allocated to the FSS, is introduced. A preliminary analysis shows there will be a possibility to implement an economical service, e. g. broadcast type transmission, by virtue of technology imported from the terrestrial short-range communications. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fixed Satellite System / UWB / Interference / Wideband Spreading Signal / Overlay |
| Paper # | SAT2004-126 |
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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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| 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) | Evaluation of interference from UWB devices into FSS systems and new technical approach of satellite system using wideband spreading signals(System Engineering II)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) |
| Sub Title (in English) | |
| Keyword(1) | Fixed Satellite System |
| Keyword(2) | UWB |
| Keyword(3) | Interference |
| Keyword(4) | Wideband Spreading Signal |
| Keyword(5) | Overlay |
| 1st Author's Name | Naoki FUKE |
| 1st Author's Affiliation | YRP Research Center, KDDI R&D Laboratories() |
| 2nd Author's Name | Takeo OHSEKI |
| 2nd Author's Affiliation | YRP Research Center, KDDI R&D Laboratories |
| 3rd Author's Name | Hisato IWAI |
| 3rd Author's Affiliation | YRP Research Center, KDDI R&D Laboratories |
| 4th Author's Name | Mitsuo NOHARA |
| 4th Author's Affiliation | YRP Research Center, KDDI R&D Laboratories |
| 5th Author's Name | Nobuyuki KAWAI |
| 5th Author's Affiliation | International Network Department, KDDI Corporation |
| Date | 2004/10/14 |
| Paper # | SAT2004-126 |
| Volume (vol) | vol.104 |
| Number (no) | 351 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |