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A Line Termination Circuit for Burst-Mode Digital Subscriber Loop Transmission

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5 Author(s)
T. Chujo ; Fujitsu Labs. Ltd., Kawasaki, Japan ; N. Ueno ; A. Takada ; Y. Hino
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This paper describes a line termination circuit for burst-mode bidirectional digital subscriber loop transmission. It incorporates the most advanced LSI technology to obtain compactness, low cost, and high reliability. Two CMOS LSI's have been developed; one is a line termination LSI (LT) and another is a circuit termination LSI (CT). LT LSI adopts a novel RC active filter-type equalizer and decision feedback bridged tap equalizer suitable for incorporation in LSI and provides high performance. By using these LSI's, a line termination circuit realizes a reach of over 5 km at 88 kbit/s bidirectional digital transmission. This paper describes each LSI and shows total performance characteristics in detail.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:4 ,  Issue: 1 )