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Publication Detail
BiCMOS add-compare-select units for Viterbi decoders
The add-compare-select unit (ACSU) plays a key role in determining the speed and complexity of a Viterbi decoder. The use of analogue circuit techniques results in a faster, more compact ACSU, which requires less power than conventional digital realisations. This paper describes two BiCMOS high-speed current-mode analogue ACSUs for use in general classes of analogue Viterbi decoders. Metric storage and accumulation employs switched-current techniques and hence no physical MOS capacitors are required.
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