題組內容

2. [15%] Consider the system in Figure 2. Assume the average value of m(t) is zero and that the maximum value of |m(t)| is M. Also assume that the square-law device is defined by y(t)=2x(E)+10x2(t).
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(c) What is the value of M to yield a modulation index of 0.2? (5%)