DISTRIBUTION LINE CARRYING SIGNAL RECEIVING METHOD USING WAVELET TRANSFORMATION
PROBLEM TO BE SOLVED: To exactly decode a signal even when carrier frequency is coincident with noise frequency. SOLUTION: In a distribution line carrying signal receiving method to receive a modulated high frequency carrying signal superimposed on AC power supply wave of a distribution line, the si...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To exactly decode a signal even when carrier frequency is coincident with noise frequency. SOLUTION: In a distribution line carrying signal receiving method to receive a modulated high frequency carrying signal superimposed on AC power supply wave of a distribution line, the signal is decoded by separating the carrying signal from the AC power supply wave by a band pass filter 3, generating a transformation pattern by performing wavelet transformation to waveform of the carrying signal by a wavelet transformer 10 and collating the transformation pattern with a predetermine reference signal pattern by a pattern collating device 13. |
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