The two baseband signals m1(t) and m2(t) are to be transmitted simultaneously Qver a channel by multiplexing scheme shown below. Sketch signal spectra at each indicated point, and what value of the carrier and filter H specification required to modulate m, (t) so that it is next to the spectrum of the signal at point R (upper or lower). Mi(f) W (t) x cin 1 6 HPF I PF

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o The two baseband signals m1 (t) and m2(t) are to be transmitted simultaneously
uer a channel by multiplexing scheme shown below. Sketch signal spectra at each
indicated point, and what value of the carrier and filter H specification required to
modulate m2 (t) so that it is next to the spectrum of the signal at point R (upper or
lower).
Mi(f)
W
m, (t) x sin 16nBt
HPF
LPF
fR=10B Hz
fR=5B Hz
R
-B 0
f
В
M2(f)
cos 2n18Bt
cos 2n11Bt
Y
m2(t)-
-2B
2B
Carrier
Transcribed Image Text:o The two baseband signals m1 (t) and m2(t) are to be transmitted simultaneously uer a channel by multiplexing scheme shown below. Sketch signal spectra at each indicated point, and what value of the carrier and filter H specification required to modulate m2 (t) so that it is next to the spectrum of the signal at point R (upper or lower). Mi(f) W m, (t) x sin 16nBt HPF LPF fR=10B Hz fR=5B Hz R -B 0 f В M2(f) cos 2n18Bt cos 2n11Bt Y m2(t)- -2B 2B Carrier
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Digital Modulation Scheme (Amplitude-Shift Keying [ASK], Phase-Shift Keying [PSK], Frequency-Shift Keying [FSK])
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