32-channel digital optical CATV distribution system
| Autor: | H. Naito, Yamaguchi Kazuo, R. Kondou, Atsuki Taniguchi, H. Yamashita, T. Ohtsuka |
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| Rok vydání: | 2003 |
| Předmět: |
Demultiplexer
Optical fiber Computer science business.industry Transmitter Data_CODINGANDINFORMATIONTHEORY Propagation delay Cable television Multiplexing Frequency-division multiplexing law.invention Transmission (telecommunications) Time-division multiplexing law Wavelength-division multiplexing Electronic engineering business Communication channel Computer network |
| Zdroj: | IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond. |
| Popis: | The authors discuss a digital optical CATV system with increased channels, focusing on its network configuration, WDM and TDM (wavelength and time division multiplexing) schemes, and its application to a 32-channel CATV distribution system. The key technologies for low-cost increased-channel CATV are discussed, and the economical number of TDM channels and the required interchannel isolation in the WDM demultiplexer are clarified. Bit-synchronized compensation for the propagation delay differences in WDM is proposed, as is a new multiplexing scheme suitable for low-power, compact TDM equipment. A compact 32-channel TDM and WDM video distribution system was designed based on a bus-star configuration and newly developed high-speed LSI technology. The transmission characteristics of the transmitter/receiver equipment developed for feeder loops were found to be good, and experimental results show that the proposed design with its versatile hardware will be a powerful tool for a low-cost multichannel digital optical CATV system. > |
| Databáze: | OpenAIRE |
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