Title :
BiCMOS add-compare-select units for Viterbi decoders
Author :
Demosthenous, Andreas ; Taylor, John
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
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
Keywords :
BiCMOS analogue integrated circuits; Viterbi decoding; switched current circuits; BiCMOS add-compare-select unit; Viterbi decoder; analogue circuit; high-speed current-mode ACSU; switched-current technique; Application software; BiCMOS integrated circuits; Communication switching; Convolution; Convolutional codes; Educational institutions; Encoding; MOS capacitors; Maximum likelihood decoding; Viterbi algorithm;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704256
