Baseband signal communication apparatus

Details Baseband signal communication apparatus Baseband signal communication apparatus

1990-04-16

1993-04-06

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

455 61, 455 63, H04B 700

Patent

active

052010600

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.

REFERENCES:
patent: 3860870 (1975-01-01), Furuya
patent: 4561115 (1985-12-01), Pfeifer
patent: 4912471 (1990-05-01), Tyburski et al.

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