G - Physics – 01 – R
Patent
G - Physics
01
R
354/138
G01R 23/16 (2006.01) G06G 7/75 (2006.01) H04Q 1/457 (2006.01)
Patent
CA 1100641
ABSTRACT OF THE DISCLOSURE A multifrequency signal receiving system com- prising a filter for whitening a received signal, a correlator for extracting partial autocorrelation coefficients from the output of the whitening filter, a prediction error analyzer for judging the presence or absence of the multifrequency signal by analyzing predic- tion analysis errors from the output of the whitening filter, and a control unit responsive to the output of the analyzer indicative of the presence of the multi- frequency signal for determining the frequency included in the received signal using the partial autocorrelation coefficients thereby identifying that the received signal is the multifrequency signal.
311311
Hirose Kazuhito
Ichikawa Akira
Nakata Kazuo
Gowling Lafleur Henderson Llp
Hitachi Ltd.
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