BROADCAST SIGNAL TRANSMITTER AND RECEIVER, AND BROADCAST SIGNAL TRANSMITTING AND RECEIVING METHOD

摘要

According to one embodiment of the present invention, a broadcast signal transmitter comprises: an input signal generating unit which generates a first input signal and a second input signal; a MIMO encoder which performs MIMO processing on the first input signal and on the second input signal so as to output a first transmission signal and a second transmission signal; and a first OFDM generator and a second OFDM generator which perform OFDM modulation on the first transmission signal and on the second transmission signal, respectively, wherein said MIMO processing is performed by applying a MIMO matrix to the first input signal and the second input signal, and said MIMO matrix adjusts the power of the first input signal and the power of the second input signal by using a parameter a, and said parameter a is set to different values in accordance with the modulation types of the first input signal and of the second input signal.