Title :
Optical digital transmission of HDTV signals for `contribution´ use
Author :
Kinoshita, Taizo ; Nakahashi, Tomoko
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
9/1/1991 12:00:00 AM
Abstract :
The key technologies for a 1.2 Gb/s HDTV optical digital transmission system for contribution service use are addressed. A wide-dynamic-range optical receiver is described. Attained average received optical power for an error rate of 10-9 was from -6 dBm to -38 dBm, with an optical dynamic range of 32 dB. This system provides for transmission lengths from a few meters to up to 80 km. It was confirmed that the system developed is available for interconnecting HDTV equipment within a studio and for dispatching HDTV programs from a production site to a postproduction studio. Scrambled-8B1C NRZ line coding was used to keep clock recovery reliable in the receiver. The line-coding circuit satisfies the BSI (bit sequence independent) property and can be easily implemented using commercial high speed ECL devices
Keywords :
encoding; high definition television; optical communication equipment; optical links; receivers; 1 m to 80 km; 1.2 Gbit/s; HDTV optical digital transmission; NRZ line coding; average received optical power; bit sequence independent; clock recovery; contribution service; error rate; line-coding circuit; optical receiver; production site links; scrambled-8B1C coding; studio equipment interconnection; wide-dynamic-range; Dispatching; Dynamic range; Error analysis; HDTV; High speed optical techniques; Integrated circuit interconnections; Optical interconnections; Optical receivers; Optical signal processing; Production systems;
Journal_Title :
Broadcasting, IEEE Transactions on
