Title :
Performance of analog Viterbi decoding
Author :
He, Kai ; Cauwenberghs, Gert
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
We propose the Binary-Analog Channel (BAC) as a model for a binary communication channel accounting for analog saturation effects, and use the model to analyze analog Viterbi decoding. We also model imperfections in the VLSI implementation of the analog decoder, to estimate practical performance. Extensive random coding simulations indicate that an analog Viterbi decoder implemented in a typical CMOS process easily outperforms its digital counterpart with 3-bit or higher soft-decision decoding resolution
Keywords :
CMOS analogue integrated circuits; VLSI; Viterbi decoding; analogue processing circuits; CMOS process; VLSI; analog Viterbi decoding; analog saturation effects; binary communication channel; binary-analog channel model; random coding simulation; soft-decision decoding; AWGN; Additive white noise; Analog-digital conversion; Convolutional codes; Decoding; Digital communication; Satellite communication; Semiconductor device modeling; Very large scale integration; Viterbi algorithm;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867194
