(Solved): 3. FIGURE Q3 shows the 16-Quadrature Amplitude Modulation (16-QAM) modulator with a carrier of 100 ...

3. FIGURE Q3 shows the 16-Quadrature Amplitude Modulation (16-QAM) modulator with a carrier of 100 MHz. TABLE Q3 is the truth table for l-channel (left) and Q-channel (right). a. I 0 0 1 1 Bit splitter I' 0 1 0 1 o ? 2-to-4-level converter 2-to-4-level converter PAM -0.821 +0.22 +0.821 Reference carrier oscillator Output (V) -0.22 Balance modulator sin t 90? cos Balance modulator FIGURE Q3 TABLE Q3 0 0 1 1 Linear summer Q' 0 1 0 1 Bandpass filter Output (V) -0.22 -0.821 +0.22 +0.821 For a quadbit input of Q = 0, Q' = 1, 1 = 0, and I' = 1 (0101) and a quadbit input of Q = 1, Q' = 1, 1 = 1, and I' = 1 (1111), analyze their output amplitudes and phases for this 16-QAM modulator. Plot them in constellation diagram. [10 Marks]