| Presentation | 2009-07-09 Feasibility evaluation of satellite VPFDM modem Fumihiro YAMASHITA, Junichi ABE, Kiyoshi KOBAYASHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | NTT Lab. has been proposing a polarization-tracking-free Ku broadband mobile satellite communications with variable polarization frequency division multiplexing (VPFDM) for future mobile satellite communications. In VPFDM system, a single user utilizes dual polarization simultaneously and does not track the polarization status at all. Therefore, cross-polarization interference should be entailed, but it is cancelled by interference canceller in the receiver. Since different users don't share the same frequency with different polarization, the problem of mutual interference between users does not occur in the proposed VPFDM system. This means that it can eliminate the function of polarization-tracking from a user earth station and VPFDM is exceedingly preferable for an antenna that can hardly track the linear polarization status in the mobile environment. This paper overviews the concept of VPFDM and introduces a newly developed modem for VPFDM systems, and then, its feasibility is also discussed. As a result, it is confirmed that the developed modem can cancel the cross-polarization interference within the degradation of less than 0.5dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communications / Ku band / Polarization / Interference canceller / VPFDM |
| Paper # | SAT2009-8 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2009/7/2(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) | Feasibility evaluation of satellite VPFDM modem |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | Ku band |
| Keyword(3) | Polarization |
| Keyword(4) | Interference canceller |
| Keyword(5) | VPFDM |
| 1st Author's Name | Fumihiro YAMASHITA |
| 1st Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation() |
| 2nd Author's Name | Junichi ABE |
| 2nd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| 3rd Author's Name | Kiyoshi KOBAYASHI |
| 3rd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| Date | 2009-07-09 |
| Paper # | SAT2009-8 |
| Volume (vol) | vol.109 |
| Number (no) | 118 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |