1. For a 16-QAM modulator with an input bit rate (fb) equal to 20 Mbps and a carrier frequency of 100 MHz, determine the minimum double-sided Nyquist bandwidth (fN) and the baud. Sketch the output spectrum.
2. For the 16-QAM modulator change the reference oscillator to cos ωct and determine the output expressions for the following I, I , Q, and Q input conditions: 0000, 1111, 1010, and 0101.
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