| Presentation | 2022-10-06 Satellite Transmission Experiment for Improvement of Link Margin of APSK Modulation Signal toward UHDTV Satellite Broadcasting for 12-GHz Band Ryota Akiyama, Yuki Koizumi, Shinsuke Yokozawa, Masaaki Kojima, Masafumi Nagasaka, Masashi Kamei, Susumu Nakazawa, Shuji Kimura, Motoki Matsubara, Hayato Nishida, Shoji Tanaka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As for the satellite transmission scheme used for 4K/8K ultra-high definition television (UHDTV), ISDB-S3 which supports the 16APSK and 32APSK modulation schemes has been standardized. Although these modulation schemes increase transmission capacity, they are susceptible to the non-linear characteristics of satellite transponders, especially traveling wave tube amplifiers (TWTAs). Therefore, it is important to analyze the influence of the non-linear characteristics on the APSK modulation signal and ensure an adequate link margin to provide stable satellite broadcasting services. The operating point of a TWTA is a dominant factor in the transmission performance of the APSK modulation signal. Setting the appropriate operating point makes it possible to achieve sufficiently the high link margin to balance the trade-off relation between output power of the satellite transponder and transmission performance. In this study, we define the evaluation method of the link margin and evaluate the optimal operating point for APSK modulation signal in a satellite broadcasting. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | UHDTV / satellite broadcasting / TWTA / Operating point / ISDB-S3 / APSK |
| Paper # | SAT2022-46 |
| Date of Issue | 2022-09-29 (SAT) |
| Conference Information | |
| Committee | SAT / KOSST |
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| Conference Date | 2022/10/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsushi Ikegami(Meiji Univ.) |
| Vice Chair | Masashi Kamei(NHK) / Takana Kaho(Shonan Inst. of Tech.) |
| Secretary | Masashi Kamei(NTT) / Takana Kaho(NICT) |
| Assistant | Riichiro Nagareda(KDDI Research) / Yuuki Koizumi(NHK) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications / Korea Society of Satellite Technology |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Satellite Transmission Experiment for Improvement of Link Margin of APSK Modulation Signal toward UHDTV Satellite Broadcasting for 12-GHz Band |
| Sub Title (in English) | |
| Keyword(1) | UHDTV |
| Keyword(2) | satellite broadcasting |
| Keyword(3) | TWTA |
| Keyword(4) | Operating point |
| Keyword(5) | ISDB-S3 |
| Keyword(6) | APSK |
| 1st Author's Name | Ryota Akiyama |
| 1st Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 2nd Author's Name | Yuki Koizumi |
| 2nd Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 3rd Author's Name | Shinsuke Yokozawa |
| 3rd Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 4th Author's Name | Masaaki Kojima |
| 4th Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 5th Author's Name | Masafumi Nagasaka |
| 5th Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 6th Author's Name | Masashi Kamei |
| 6th Author's Affiliation | NHK Science and Technology Research Laboratories(NHK) |
| 7th Author's Name | Susumu Nakazawa |
| 7th Author's Affiliation | Broadcasting Satellite System Corporation(B-SAT) |
| 8th Author's Name | Shuji Kimura |
| 8th Author's Affiliation | Broadcasting Satellite System Corporation(B-SAT) |
| 9th Author's Name | Motoki Matsubara |
| 9th Author's Affiliation | Broadcasting Satellite System Corporation(B-SAT) |
| 10th Author's Name | Hayato Nishida |
| 10th Author's Affiliation | Broadcasting Satellite System Corporation(B-SAT) |
| 11th Author's Name | Shoji Tanaka |
| 11th Author's Affiliation | Broadcasting Satellite System Corporation(B-SAT) |
| Date | 2022-10-06 |
| Paper # | SAT2022-46 |
| Volume (vol) | vol.122 |
| Number (no) | SAT-199 |
| Page | pp.pp.12-15(SAT), |
| #Pages | 4 |
| Date of Issue | 2022-09-29 (SAT) |