Patent ID: 6965650

Claim:
A digital modulation type signal transmission apparatus for digitally modulating a plurality of signals for transmission including a transmission side and a reception side, said transmission side comprising: an input terminal to which information codes are applied; a first modulation circuit coupled with said input terminal for assigning each of said information codes to any one of a plurality of signal points arranged on an I-Q complex plane and converting said information codes to first signals corresponding to coordinates of the assigned signal points; a second modulation circuit for assigning a pilot signal used for demodulating said information codes, and an auxiliary signal including Transmission and Multiplexing Configuration Control (TMCC) information to be arranged on different signals points on the I-Q complex plane and converting said pilot signal and said auxiliary signal to respective second signals corresponding to coordinates of the assigned signal points; and a transmission unit coupled with said first and second modulation circuit for transmitting said first and second signals.