4.2-1 For each of the baseband signals: (i) m(t) = cos 10001; (i) m(t) = 2...

 

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4.2-1 For each of the baseband signals: (i) m(t) = cos 10001; (i) m(t) = 2 cos 1000nı + sin 2000rr; (ii) m(t) = cos 1000rrcos 3000.rt, do the following. (a) Sketch the spectrum of m(1). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000TI. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. 4.2-1 For each of the baseband signals: (i) m(t) = cos 10001; (i) m(t) = 2 cos 1000nı + sin 2000rr; (ii) m(t) = cos 1000rrcos 3000.rt, do the following. (a) Sketch the spectrum of m(1). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000TI. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra.