A transmitter generates message signals that are described by a baseband stationary random process x(t). The power spectral density (PSD) of x(t) is shown in Figure Q4-A. The transmission channel is distortionless, but the receiver is affected by additive noise. The noise signals can be described by a stationary random process n(t). The PSD of n(t) is flat over the entire frequency range and is shown in Figure Q4-B. a. Find the Fourier transform of S(t), i.e., the PSD of x(t) with its variable renamed as t. b. Use the duality of the Fourier transform and the result in Q4-a, find the autocorrelation of x(t). Sx(f) 10-3 0 -f (Hz) Figure Q4-A 10-9 -104 Sn (f) 0 Figure Q4-B -ƒ (Hz) 104

! Required information A parallel resonance circuit has a resistance of 2 KQ and half-power frequencies of 84 kHz and 92 kHz. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the capacitance. The value of the capacitance is nF.

(Use the Proteus Simulation Software to construct).