Abstract

This paper describes the design and performance of a field-deployable fiber-optic video distribution system which uses biphase-shift-keyed (BPSK) microwave subcarrier multiplexing (SCM) techniques to provide each subscriber with twenty 107-Mbit/s digitized video signals. As shown in the block diagram of Fig. 1, the twenty video channels sent to each subscriber consist of sixteen broadcast channels and four video-on-demand channels carried on individual microwave subcarriers spaced at 200-MHz intervals from 2.1 to 5.9 GHz. Each subscriber is also provided with a 2.04-Mbit/s BPSK voice/data channel at a subcarrier frequency of 1.9 GHz. The twenty-one microwave subcarriers are multiplexed together to intensity modulate a high-speed 1.3-μm laser dedicated to each subscriber, giving a total transport capacity of 2.144 Gbit/s/subscriber. Each subscriber station is equipped with a high-frequency PIN diode detector followed by five double-conversion microwave receivers for simultaneous reception of four video channels plus a voice/data channel.

© 1989 Optical Society of America

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