Engineering, 21.02.2020 23:55 10040813

Consider a pulse s(t) = sinc(at) sinc(bt) where a ≥ b.
a. Sketch the spectrum S(f) of the pulse.
b. Suppose that the pulse is to be used over an ideal real baseband channel with one-sided bandwidth 400 Hz. Determine a and b such that the pulse is Nyquist for 4-PAM at 1200 b/s and exactly fills the channel bandwidth.
c. Now, suppose that the pulse is to be used over a passband channel spanning the frequency band 2.4–2.42 GHz. Assuming that we use 64-QAM at 60 Mb/s, determine a and b so that the pulse is Nyquist and exactly fills the channel bandwidth.
d. Sketch an argument showing that the magnitude of the transmitted waveform in the preceding settings is always finite.

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Consider a pulse s(t) = sinc(at) sinc(bt) where a ≥ b.
a. Sketch the spectrum S(f) of the puls...

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