Remote device of multi-band signal receiving and transmitting system and multi-band signal receiving and transmitting system

The utility model discloses a far-end device of a multi-band signal receiving and transmitting system and the multi-band signal receiving and transmitting system. The far-end device comprises a signal processing and control unit, an electric energy metering unit and a plurality of band receiving and transmitting units, each frequency band transmit-receive unit corresponds to digital baseband signals of different frequency bands, and a corresponding relation table of signal amplitude values and output power values of the digital baseband signals is preset in each frequency band transmit-receive unit; the electric energy metering unit is used for counting electric energy data fed by an external power supply; and the signal processing and control module is used for acquiring the signal amplitude value of the digital baseband signal of each frequency band, acquiring the output power value of the digital baseband signal of each frequency band according to the signal amplitude value and the corresponding relation t