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Application of advanced microelectronics to large-scale communication equipment-compact and maintenance-free TDMA equipment

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5 Author(s)
Kato, S. ; NTT Radio Commun. Syst. Labs., Yokosuka, Japan ; Morikura, M. ; Umehira, M. ; Enomoto, K.
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An architecture is proposed for TDMA (time division multiple access) equipment and functional-module realization in microelectronics to increase reliability and to reduce hardware size and development time. The approach described basically involves digitization of analog circuits (allowing their realization using digital LSI circuits) and analog IC implementation for high-speed circuits. In order to use general-purpose LSI circuits and ICs, TDMA equipment is reconfigured into a hardware-oriented and simplified architecture. Using this architecture and optimal function assigning to each module, six types of general-purpose synchronization unit LSI circuits have been developed in addition to eleven types of LSI circuits and ICs, i.e. three types of digital LSI circuits, four types of MAICs (monolithic analog ICs), and four types of HICs (hybrid ICs) for a burst modem. As a result of this LSI circuit and IC implementation, the hardware size of TDMA equipment has been reduced to one-fifth of the conventional size, and maintenance-free capability has been achieved

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Selected Areas in Communications, IEEE Journal on  (Volume:8 ,  Issue: 8 )