Baseband signal communication apparatus
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United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
Apr 16, 1990
filing date -
Apr 19, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A baseband signal communication apparatus includes a transmission unit and a reception unit. The transmission unit superposes a subcarrier on one value of a baseband signal consisting of binary values, modulates a carrier with the baseband signal on which the subcarrier is superposed, and transmits the baseband signal as a transmission signal wave. The reception unit demodulates the baseband signal having the subcarrier superposed thereon by using a demodulator upon reception of the transmission signal wave, extracts the subcarrier from the demodulated signal by using a bandpass filter, and demodulates the baseband signal by causing a detector to detect an envelope of the subcarrier.
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