Adaptive detection method and detector for quantized signals

Details Adaptive detection method and detector for quantized signals Adaptive detection method and detector for quantized signals

1993-06-10

1995-06-27

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

36472419, 375232, 375261, 375346, 375349, H03D 100, H04L 2706

Patent

active

054286441

ABSTRACT:
The invention relates to an adaptive detection method and detector for detecting signal states of a received quantized signal using a set of reference vectors stored in a memory (11). According to the invention, the detector comprises sampling means (4) for sampling the received signal in a sliding time window; means (2) using a self-organizing map for calculating a first corrected set of reference vectors on the basis of the stored set of reference vectors used in the detection and samples of actual signal states received in the time window; means (3) employing the K-means method or the like for calculating a second corrected set of reference vectors on the basis of the first corrected set of reference vectors and the samples of the actual signal states; and means (9) for updating the set of reference vectors stored in the memory means (11) by the second corrected set of reference vectors.

REFERENCES:
patent: 4905254 (1990-02-01), Bergmans
patent: 5233635 (1993-08-01), Henriksson et al.
patent: 5287385 (1994-02-01), Sugawara et al.
Gerhard Rigoll, "Information Theory-Based Supervised Learning Methods for Self-Organizing Maps in Combination with Hidden Markov Modeling", IEEE 1991, pp. 65-68.

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