21. A low-pass band-limited message signal m(t) has been sampled: a) ideally, b) naturally, c) instantaneously, using sa

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21 A Low Pass Band Limited Message Signal M T Has Been Sampled A Ideally B Naturally C Instantaneously Using Sa 1 (25.99 KiB) Viewed 27 times

21. A low-pass band-limited message signal m(t) has been sampled: a) ideally, b) naturally, c) instantaneously, using sampling frequency f-1/T, greater then the Nyquist frequency (>2 W). Find and draw the spectrum of the sampled signal. In the receiver the message signal is recovered from the samples' sequence using a low-pass filter. Compute the attenuation of the recovered signal related to the transmitted signal m(t) (the attenuation is understood as a ratio of the energy of transmitted signal to the energy of recovered signal).