Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1998-02-09
2000-10-17
Chin, Stephen
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
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.
Jeon Jin-Kyu
Soichi Iwamura
Chin Stephen
Deppe Betsy L.
Samsung Electronics Co,. Ltd.
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