Time-division multiplex communication transmission apparatus

DETAILED DESCRIPTION It is an object of the present invention to provide a time-division multiplex radio transmission apparatus which can prevent unnecessary spread of the spectrum of a transmission wave at the boundary of adjacent time slots.
It is another object of the present invention to provide a time-division multiplex radio transmission apparatus which does not interfere with communication in an adjacent frequency channel.
In order to achieve the above objects, according to the present invention, there is provided a time-division multiplex communication transmission apparatus comprising logic processing means for performing logic processing of input burst data and outputting a burst timing signal for each time slot for time-division transmission, digital filter means for converting output data from the logic processing means into baseband data for modulation, the digital filter means being reset at a time slot boundary when no burst data signal is present in an adjacent time slot, modulation means for modulating an output signal from the digital filter means, and high-frequency amplification means for performing burst waveform processing of an output signal from the modulation means on the basis of a burst timing signal from the logic processing means.