In a DSB-SC system, the carrier frequency is 200 kHz, and themodulating signal m(t) has a
uniform PSD band-limited to 3 kHz. The modulated signal istransmitted over a distortionless
channel with a noise PSD Sn(f) = 1/(4π^2f^2+a2), where a =π(10^6). The useful signal power at the
receiver is 1 μW. The received signal is bandpass filtered,multiplied by 2 cos(ωct), and then lowpass
filtered to obtain the output so(t)+no(t). Determine the outputSNR.


Detailed answers to tough
homework problems