One possible architecture of a QAM modulator is shown in Figure \PageIndex1 and this can only be implemented in DSP since it is not sufficient to use analog lowpass filtering to implement the wa...One possible architecture of a QAM modulator is shown in Figure \PageIndex1 and this can only be implemented in DSP since it is not sufficient to use analog lowpass filtering to implement the wave-shaping function as the i(t) and q(t) must be precisely the real and imaginary parts of the symbol at each clock tick.
