| Paper Abstract and Keywords |
| Presentation |
2025-03-07 11:20
[Memorial Lecture]
A Study and Development Status of the Next Generation STL/TTL
Tomohiro Shimazaki, Tetsuya Umenai, Takayuki Nakagawa, Kazuhiro Otsuki (NHK) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We have been studying the next generation studio-to-transmitter link / transmitter-to-transmitter link (STL/TTL) for Advanced Integrated Services Digital Broadcasting - Terrestrial (Advanced ISDB-T). In the transition from the current ISDB-T to Advanced ISDB-T, the next generation STL/TTL is required to transmit a new modulator interface (Studio to Transmitter Link Protocol (STLP)) for the Advanced ISDB-T system. Similarly, multiplex transmission of a current modulator interface (broadcast Transport Stream (TS)) and STLP is required from the viewpoint of effective use of frequency. We examined a method of multiplex transmission and verified the feasibility by testing a prototype of next generation STL/TTL system. As a result, we confirmed that both STLP-only transmission and multiplex transmission of STLP and broadcast TS are possible with next generation STL/TTL. In addition, STL/TTL of a wireless microwave line may break with a fixed probability owing to fading caused by natural phenomenon. To improve the reliability of STL/TTL, an STL/TTL system was developed with a combination of wireless microwave line and wired IP line using a forward error correction by selecting the likelihood ratio obtained from both lines. A prototype was built and verified. It was confirmed that the reliability of STL/TTL can be improved by utilizing a combination of wireless microwave line and wired IP line. This lecture reports on the state of development of the next generation STL/TTL, focusing on the above two points. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
STL/TTL / STLP / Program signals / Multiplex transmission / Wireless Microwave line / Wired IP line / Likelihood Ratio / |
| Reference Info. |
ITE Tech. Rep., vol. 49, no. 8, BCT2025-45, pp. 16-16, March 2025. |
| Paper # |
BCT2025-45 |
| Date of Issue |
2025-02-28 (BCT) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
BCT IEEE-BT |
| Conference Date |
2025-03-07 - 2025-03-07 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
|
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Digital Broadcasting Technology |
| Paper Information |
| Registration To |
BCT |
| Conference Code |
2025-03-BCT-BT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Study and Development Status of the Next Generation STL/TTL |
| Sub Title (in English) |
|
| Keyword(1) |
STL/TTL |
| Keyword(2) |
STLP |
| Keyword(3) |
Program signals |
| Keyword(4) |
Multiplex transmission |
| Keyword(5) |
Wireless Microwave line |
| Keyword(6) |
Wired IP line |
| Keyword(7) |
Likelihood Ratio |
| Keyword(8) |
|
| 1st Author's Name |
Tomohiro Shimazaki |
| 1st Author's Affiliation |
Japan Broadcasting Corporation (NHK) |
| 2nd Author's Name |
Tetsuya Umenai |
| 2nd Author's Affiliation |
Japan Broadcasting Corporation (NHK) |
| 3rd Author's Name |
Takayuki Nakagawa |
| 3rd Author's Affiliation |
Japan Broadcasting Corporation (NHK) |
| 4th Author's Name |
Kazuhiro Otsuki |
| 4th Author's Affiliation |
Japan Broadcasting Corporation (NHK) |
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| Speaker |
Author-1 |
| Date Time |
2025-03-07 11:20:00 |
| Presentation Time |
30 minutes |
| Registration for |
BCT |
| Paper # |
BCT2025-45 |
| Volume (vol) |
vol.49 |
| Number (no) |
no.8 |
| Page |
p.16 |
| #Pages |
1 |
| Date of Issue |
2025-02-28 (BCT) |