Time-division multiplex communication transmission apparatus

A time-division multiplex communication transmission apparatus for transmitting a time-division multiplexed output signal having a plurality of time slots, comprising:

• timing extraction means receiving input burst data for outputting a burst timing signal for each time slot of said time-division multiplexed output signal on the basis of said input burst data;
• adder means for receiving said input burst data and for performing addition processing of said input burst data;
• frequency-dividing means for outputting a frequency-divided clock, obtained by frequency-dividing an external clock in synchronism with a period of said input burst data, to said adder means and said timing extraction means;
• continuous state detection means for outputting a burst continuous state signal upon detecting a continuous state of said input burst data in two adjacent, continuous time slots on the basis of said input burst data;
• digital filter means for converting output data from said adder means into baseband data for modulation, said digital filter means being reset by a reset signal;
• modulation means for modulating an output signal from said digital filter means;
• high-frequency amplification means for performing burst waveform processing of an output signal from said modulation means on the basis of a burst timing signal from said timing extraction means and for outputting said time division multiplexed output signal;
• and
• gate means for allowing a burst timing signal from said timing extraction means to pass therethrough to output a reset signal to said digital filter means when no burst continuous state signal is inputted from said continuous state detection means, and inhibiting passage of the burst timing signal to prevent the reset signal from being outputted when a burst continuous state signal is inputted.