| Presentation | 2011-08-25 Development of the LDPC Coded and the Phase Reference Burst Signal Implemented Wide-Band Modem aiming at Super Hi-Vision Broadcasting via Satellite Yoichi SUZUKI, Akinori HASHIMOTO, Shoji Tanaka, Takeshi Kimura, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Aiming at the realization of "Super Hi-Vision" (SHV) satellite broadcasting, NHK is studying a scheme for high-capacity transmission by Broadcasting Satellite Service (BSS) in the 21-GHz band. At first, we introduce the example cases of SHV transmission via satellite conducted by NHK and cooperators. Second, we mention a QPSK/8PSK wideband (300-MHz bandwidth) modem whose FEC scheme is the concatenation of LDPC and BCH code. The maximum symbol rate is 250 Mbaud and it can provide wide range of information bit rates from 251 Mbps (a combination of modulation and code rate is QPSK-1/2) to 677 Mbps (8PSK-9/10). LDPC coding has an excellent performance which is close to the "Shannon limit". Therefore, the LDPC coded modem has to achieve robustness of synchronization against the very low C/N conditions under which LDPC code can demonstrate error correction performance. This is a strong motivation to periodically introduce a n/2 shifted BPSK based Phase Reference Burst Signal (PRBS) to the symbol frame. The performances evaluation by changing PRBS lengths is a focal point of this paper. We evaluate the transmission performances under IF loopback conditions as a whole to understand the effect of PRBS. C/N vs. BER and phase synchronization are fully investigated. Also, we report the performances under satellite-loop condition using the "WINDS" satellite. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite Broadcasting / Super Hi-Vision / WINDS / LDPC code / QPSK / 8PSK |
| Paper # | SAT2011-21,RCS2011-116 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2011/8/18(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) | Development of the LDPC Coded and the Phase Reference Burst Signal Implemented Wide-Band Modem aiming at Super Hi-Vision Broadcasting via Satellite |
| Sub Title (in English) | |
| Keyword(1) | Satellite Broadcasting |
| Keyword(2) | Super Hi-Vision |
| Keyword(3) | WINDS |
| Keyword(4) | LDPC code |
| Keyword(5) | QPSK |
| Keyword(6) | 8PSK |
| 1st Author's Name | Yoichi SUZUKI |
| 1st Author's Affiliation | Science & Technology Research Laboratories, NHK (Japan Broadcasting Corporation)() |
| 2nd Author's Name | Akinori HASHIMOTO |
| 2nd Author's Affiliation | Science & Technology Research Laboratories, NHK (Japan Broadcasting Corporation) |
| 3rd Author's Name | Shoji Tanaka |
| 3rd Author's Affiliation | Science & Technology Research Laboratories, NHK (Japan Broadcasting Corporation) |
| 4th Author's Name | Takeshi Kimura |
| 4th Author's Affiliation | Science & Technology Research Laboratories, NHK (Japan Broadcasting Corporation) |
| Date | 2011-08-25 |
| Paper # | SAT2011-21,RCS2011-116 |
| Volume (vol) | vol.111 |
| Number (no) | 179 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |