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QUESTIONS 1. For the baseband signal m() 2 Cos (1000rt) Cos(2000xt): ytically express the spectru...
For the baseband signal m(t) = cos(1000πt) cos(3000πt), do the following. (a) Sketch the spectrum of...
For the baseband signal m(t) = cos(1000πt) cos(3000πt), do the following. (a) Sketch the spectrum of m(t) (b) Sketch the spectrum of the DSB-SC signal m(t)cos(10, 000πt). (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC, USB and LSB spectra. Explain the nature of frequency shifting in each case.
4.2.1 For each of the baseband signals: (i) m(t) = cos 1000πι; (ii) m(1) = 2cos...
4.2.1 For each of the baseband signals: (i) m(t) = cos 1000πι; (ii) m(1) = 2cos sin 2000Tr; (ii) m(t) cos 1000t t cos 3000T t, do the following. (a) Sketch the spectrum of mt). (b) Sketch the spectrum of the DSB-SC signal mt) cos 10.000π. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC USB, and LSB spectra. Explain the nature of...
1. Given a baseband signal m(t) sin(1000mt) cos(3000nt) + cos(3700nt a. Sketch the spectrum of m(...
1. Given a baseband signal m(t) sin(1000mt) cos(3000nt) + cos(3700nt a. Sketch the spectrum of m(t) (Hint. sin(a) cos(b) 0.5 sin(a +b) +0.5sin a-b)) b. Sketch the spectrum of DSB-CS signal m(t)cos(10000mt) C ldentify the upper sideband {USB) and lower sideband (LSB) spectra d. Give the black diagram of the receiver to receive DSB-CS signal in (b). 2. baseband signal m(r)--0.5 + Σ..小(t-n)-u(t-0.5-n)] where ult) is the Given unit step function, an amplitude modulated signal is as SAM 107+ m(0cos...
4. [20 points] A modulating signal m(t) is given by m(t)-cos(100nt)cos(500nt): 1) [5 points] Sketch the...
4. [20 points] A modulating signal m(t) is given by m(t)-cos(100nt)cos(500nt): 1) [5 points] Sketch the spectrum of m(t). 2) [5 points] Find and sketch the spectrum of the DSB-SC signal 2m(t)cos(1000t). 3) [5 points] From the spectrum obtained in 2), suppress the LSB to obtain the USB spectrum and sketch it. 4) [5 points] Knowing the USB spectrum in 3), write the expression puse(t) for the USB signal For full credit, label frequencies and magnitudes of the spectra for...
Cny e upper sldeband (uSB) and lower sideband (LSB) spectra. (5 polnts) Al 2. Figure-1 below show...
Cny e upper sldeband (uSB) and lower sideband (LSB) spectra. (5 polnts) Al 2. Figure-1 below shows a DSB-SC modulator. The carrier avaliable at the multiplier is a distorted sinusoid given by c(t)- Cos3(wet). The spectrum of m(t) is shown in Figure-2 M(f) m(t) Fllter -В c(t) Figure-2 Figure 1 a. Determine the signals and sketch their spectra at points b and c. (5 points). b. What kind of filter is required in Figure-1? Verify your answer. (5 points). c....
5. A message signal m(t) = cos(2000πt)+2 cos(4000πt) modulates the carrier c(t) = 100 cos(2πfct), where...
5. A message signal m(t) = cos(2000πt)+2 cos(4000πt) modulates the carrier c(t) = 100 cos(2πfct), where fc = 1 MHz to produce the DSB signal m(t)c(t). ( 1. Determine the expression for the upper-sideband (USB) signal. 2. Determine and sketch the spectrum of the USB signal.
When a baseband signal m(t) = cos(1000t)cos(3000t) is AM modulated using a carrier cos(10,000t), a) Find the...
When a baseband signal m(t) = cos(1000t)cos(3000t) is AM modulated using a carrier cos(10,000t), a) Find the frequency components in the baseband signals and in the AM signal. [2] b) Sketch the spectrum, carefully label the graph. c) Find the power efficiency, n. [1] [1]
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an...
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an LSB-AM signal. (a) Find and sketch the spectrum of m(t); determine and sketch the spectrum of mh (t) graphically; determine m,(t) by finding the inverse Fourier transform of the previous spectrum; determine the LSB-AM message signal expression. (b) Sketch the spectrum of the DSB-SC signal 2m(t) cos 2mfet; remove the upper sideband and sketch the resulting LSB spectrum; determine the LSB-AM message signal expression...
A message signal m(t) = sin30nt +3cos200nt is to be modulated by the carrier, 1. cos(20,000nt)....
A message signal m(t) = sin30nt +3cos200nt is to be modulated by the carrier, 1. cos(20,000nt). (a) Find X(f) (b) Find the DSB-SC signal x(t) and Xf). (c) Sketch the spectrums of |M(G| and |X(f)|. In the spectrum, identify the USB and LSB spectra. (d) Find the message signal power, m2(t). (e) Find the transmitted power, Sr x2(t). (f Find the massage signal bandwidth, B, and the transmitted signal bandwidth, Br. (g) Describe the demodulation process and find the detected...
4.4-4 Find LSR (t) and USB (1) for the modulating signal m(t) = 7B sinc (27...
4.4-4 Find LSR (t) and USB (1) for the modulating signal m(t) = 7B sinc (27 BI) with B = 2000 Hz and carrier frequency fe = 10,000 Hz. Follow these steps: (a) Sketch spectra of m(t) and the corresponding DSB-SC signal 2m(t) cos wcl. (b) To find the LSB spectrum, suppress the USB in the DSB-SC spectrum found in part (a). (c) Find the LSB signal LSB (t), which is the inverse Fourier transform of the LSB spectrum found...
4.2.1 For each of the baseband signals: (i) m(t) = cos 1000πι; (ii) m(1) = 2cos sin 2000Tr; (ii) m(t) cos 1000t t cos 3000T t, do the following. (a) Sketch the spectrum of mt). (b) Sketch the spectrum of the DSB-SC signal mt) cos 10.000π. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC USB, and LSB spectra. Explain the nature of...
1. Given a baseband signal m(t) sin(1000mt) cos(3000nt) + cos(3700nt a. Sketch the spectrum of m(t) (Hint. sin(a) cos(b) 0.5 sin(a +b) +0.5sin a-b)) b. Sketch the spectrum of DSB-CS signal m(t)cos(10000mt) C ldentify the upper sideband {USB) and lower sideband (LSB) spectra d. Give the black diagram of the receiver to receive DSB-CS signal in (b). 2. baseband signal m(r)--0.5 + Σ..小(t-n)-u(t-0.5-n)] where ult) is the Given unit step function, an amplitude modulated signal is as SAM 107+ m(0cos...
4. [20 points] A modulating signal m(t) is given by m(t)-cos(100nt)cos(500nt): 1) [5 points] Sketch the spectrum of m(t). 2) [5 points] Find and sketch the spectrum of the DSB-SC signal 2m(t)cos(1000t). 3) [5 points] From the spectrum obtained in 2), suppress the LSB to obtain the USB spectrum and sketch it. 4) [5 points] Knowing the USB spectrum in 3), write the expression puse(t) for the USB signal For full credit, label frequencies and magnitudes of the spectra for...
Cny e upper sldeband (uSB) and lower sideband (LSB) spectra. (5 polnts) Al 2. Figure-1 below shows a DSB-SC modulator. The carrier avaliable at the multiplier is a distorted sinusoid given by c(t)- Cos3(wet). The spectrum of m(t) is shown in Figure-2 M(f) m(t) Fllter -В c(t) Figure-2 Figure 1 a. Determine the signals and sketch their spectra at points b and c. (5 points). b. What kind of filter is required in Figure-1? Verify your answer. (5 points). c....
When a baseband signal m(t) = cos(1000t)cos(3000t) is AM modulated using a carrier cos(10,000t), a) Find the frequency components in the baseband signals and in the AM signal. [2] b) Sketch the spectrum, carefully label the graph. c) Find the power efficiency, n. [1] [1]
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an LSB-AM signal. (a) Find and sketch the spectrum of m(t); determine and sketch the spectrum of mh (t) graphically; determine m,(t) by finding the inverse Fourier transform of the previous spectrum; determine the LSB-AM message signal expression. (b) Sketch the spectrum of the DSB-SC signal 2m(t) cos 2mfet; remove the upper sideband and sketch the resulting LSB spectrum; determine the LSB-AM message signal expression...
A message signal m(t) = sin30nt +3cos200nt is to be modulated by the carrier, 1. cos(20,000nt). (a) Find X(f) (b) Find the DSB-SC signal x(t) and Xf). (c) Sketch the spectrums of |M(G| and |X(f)|. In the spectrum, identify the USB and LSB spectra. (d) Find the message signal power, m2(t). (e) Find the transmitted power, Sr x2(t). (f Find the massage signal bandwidth, B, and the transmitted signal bandwidth, Br. (g) Describe the demodulation process and find the detected...
4.4-4 Find LSR (t) and USB (1) for the modulating signal m(t) = 7B sinc (27 BI) with B = 2000 Hz and carrier frequency fe = 10,000 Hz. Follow these steps: (a) Sketch spectra of m(t) and the corresponding DSB-SC signal 2m(t) cos wcl. (b) To find the LSB spectrum, suppress the USB in the DSB-SC spectrum found in part (a). (c) Find the LSB signal LSB (t), which is the inverse Fourier transform of the LSB spectrum found...
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