Title :
Progress of Transmission Technologies for UDTV
Author :
Oyamada, Kimiyuki ; Okabe, Satoshi ; Aoki, Katsunori ; Suzuki, Yoichi
Author_Institution :
Broadcasting Networks Res. Div., Japan Broadcasting Corp., Tokyo, Japan
Abstract :
This paper describes the recent progress of research and development on transmission technologies for Super Hi-Vision (SHV), which is the form of ultrahigh-definition television (UHDTV) with the highest resolution class. The paper covers the transmission systems for SHV program production and satellite broadcasting. For short-haul transmission, an optical digital interface for video equipment was developed. It wavelength-multiplexes eight 10-Gb/s optical signals. It was experimentally confirmed that the transmission distance was at least 2 km, and that a series connection of the interfaces did not severely deteriorate jitter performance. We are also developing a 120-GHz-band wireless contribution short-haul link consisting of three transmitter/receiver pairs. All three pairs transmit and receive a 10.3-Gb/s signal at the same frequency. Experiments showed that transmission with little crosstalk is possible over a distance of 1.25 km when the receiver spacing is 8 m. A long-haul optical contribution link that we developed can transmit a 24-Gb/s SHV signal over a distance of 260 km by using optical amplifiers and no electronic repeaters. An IP network would be a good choice for long-distance links such as an international live contribution link. Several live IP transmissions of compressed video were conducted. Satellite relay transmission and broadcasting technology is also being developed. In particular, we have developed a QPSK/8PSK wide-band modem that uses LDPC and BCH codes. The modem could transmit 251-Mb/s (QPSK) and 677-Mb/s (8PSK) signals and was used in a live SHV satellite-transmission experiment.
Keywords :
BCH codes; IP networks; direct broadcasting by satellite; high definition television; jitter; modems; parity check codes; quadrature phase shift keying; television receivers; television transmitters; BCH codes; IP network; IP transmissions; LDPC codes; QPSK-8PSK; SHV program production; UHDTV; broadcasting technology; compressed video; crosstalk; jitter performance; live SHV satellite-transmission; long-haul optical contribution link; optical amplifiers; optical digital interface; research and development; satellite broadcasting; satellite relay transmission; short-haul transmission; super Hi-Vision; transmission technologies; transmitter-receiver pairs; ultrahigh-definition television; video equipment; wavelength-multiplexes; wide-band modem; wireless contribution short-haul link; Adaptive optics; Bit error rate; Broadcasting; HDTV; Optical amplifiers; Optical imaging; Satellite communication; Digital TV; HDTV; satellite broadcasting; video equipment;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/JPROC.2012.2193851