Peak detector using automatic threshold control and method there

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

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375317, 375377, 327 58, H03D 100, H03K 5153, H04L 2506, H04L 2300

Patent

active

061342793

ABSTRACT:
A peak detector for a maximum likelihood decoding system, using an automatic threshold control (ACT), and a method therefor are provided. In the peak detector, positive and negative peak values are detected from an input signal having digital information, based on positive and negative threshold values, and then each threshold value is evaluated according to positive and negative values of the input signal, to reset each threshold value to a predetermined value based on the detected peak value having the opposite polarity thereto. Accordingly, data can be detected exactly, improving performance of Viterbi decoding.

REFERENCES:
patent: 5373400 (1994-12-01), Kovacs
"Analog Switch Cuts Peak-Detector Reset Time" Bolognesi et al., EDN Electrical Design News, vol. 40, No. 11, May 25, 1995, p. 88, XP000520332.
"Der Goldene Mittelweg" Marguerre, Elektronik, vol. 33, No. 9, May 1989, pp. 65-68, XP002082042 Munchen, DE.

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