By Naoki Fukaya, Shuji Kato, Yasunori Murakami, Kazuo Murayama, Yoshiaki Sakanushi, Kazuo Iizuka, Shin-ichi Asaka, and Stefhan R. Sherman, Sumitomo Electric Industries Ltd.
Fiber optic CATV transportation is achieving higher performances standards and lower cost with the utilization of the latest break throughs in VSB-AM and PCM technological. Studies have shown that VSB-AM fiber optic transmission provides an economical means for the transportation of high count CATV channels. Fiber Optic CATV transporation using VSB-AM trunk distribution in conjunction with PCM super trunking can provide a cost effective method of distributing high quality CATV signal to a large distribution area.
To support this hypothesis Sumitomo investigated the technical aspects of this transportation concept. This paper summarizes the following experimental tests;
- Multi-drop distributions of baseband PCM video signals from PCM fiber optic backbone.
- Long distant PCM transmission of high quality video signals through multiple PCM repeaters.
- End of line performance of a cascaded PCM, VSB-AM, and coaxial CATV transportation network.
We are also proposing high count base band video signal distribution using PCM equipment operating at 1.2 Gbps and 2.4 Gbps providing un-compressed transmission of high channel capacity per fiber distribution.