| Presentation | 2009-06-03 A proposal of highly accurate wide-range AFC for Adaptive Variable Polarization Frequency Division Multiplexing Jun-ichi ABE, Fumihiro Yamashita, Kiyoshi KOBAYASHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | NTT has proposed "Variable Polarization Frequency Division Multiplexing (VPFDM)" system for Ku broadband mobile satellite communication system. VPFDM utilizes V/H dual polarizations and multiple-carrier simultaneously. In VPFDM system, since the earth station does not track V/H dual polarizations, the quality of the received signals is degraded due to cross-polarization interference. Moreover, each polarization signal undergoes different frequency offsets in transmission channel, Therefore, the cross-polarization interference and frequency offsets have to be cancelled precisely and simultaneously. In this paper, we propose a highly accurate and wide range frequency offset estimator for VPFDM system with low C/N ratio. We evaluate the performance of proposed frequency offset estimator and VPFDM signal transmission with proposed circuits by computer simulations. Moreover, to utilize transmission power and frequency band in satellite transponder, we confirm the performance of VPFDM with proposed circuit and adaptive modulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communications / AFC / Polarization / VPFDM / Adaptive modulation |
| Paper # | SAT2009-1 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2009/5/27(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A proposal of highly accurate wide-range AFC for Adaptive Variable Polarization Frequency Division Multiplexing |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | AFC |
| Keyword(3) | Polarization |
| Keyword(4) | VPFDM |
| Keyword(5) | Adaptive modulation |
| 1st Author's Name | Jun-ichi ABE |
| 1st Author's Affiliation | NTT Access Network Service Systems Laboratories() |
| 2nd Author's Name | Fumihiro Yamashita |
| 2nd Author's Affiliation | NTT Access Network Service Systems Laboratories |
| 3rd Author's Name | Kiyoshi KOBAYASHI |
| 3rd Author's Affiliation | NTT Access Network Service Systems Laboratories |
| Date | 2009-06-03 |
| Paper # | SAT2009-1 |
| Volume (vol) | vol.109 |
| Number (no) | 72 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |