The message signal m(t) is defined as This message DSB-AM modulates the carrier and the resulting… 1 answer below »

The message signal m(t) is defined as

This message DSB-AM modulates the carrier  and the resulting modulated signal is denoted by ( t) . It is assumed that to = 0 .15 s and ƒc = 250Hz

1. Obtain the expression for ( t) .

2. Derive the spectra of m ( t) and  ( t) .

3. Assuming that the message signal is periodic with period To = to, determine the power in the modulated signal.

4. If a noise is added to the modulated signal in part 3 such that the resulting SNR is 10 dB, find the noise power

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