1. Given a baseband signal m(t) sin(1000mt) cos(3000nt) + cos(3700nt a. Sketch the spectrum of m(...
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 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...
Problem No. 1: Let us consider that a baseband message signal m(t)=4cos(2000xt) has to be transmitted from a location 'A' to its destination 'B' using a carrier signal given by c(t)=2cos(10000#t). The signal s() m(t)c(i) is the modulated signal which will be transmitted. Consider that the signal is transmitted through a noiseless channel and received at the receiver at location 'B' as the signal s(t). Based on this information, perform the following tasks. 1. Find, sketch and label the spectrum...
QUESTIONS 1. For the baseband signal m() 2 Cos (1000rt) Cos(2000xt): ytically express the spectrum of the following signals, and then sketch them: (1)m(t) (5 points). (2) u(t) = m(t), Cos (10000따 ( 5 points). a. Anal b. Identify the upper sideband (USB) and lower sideband (LSB) spectra. (5 points)
QUESTIONS 1. For the baseband signal m() 2 Cos (1000rt) Cos(2000xt): ytically express the spectrum of the following signals, and then sketch them: (1)m(t) (5 points). (2) u(t) = m(t),...
1. If m(t) = cos(800 mt) cos(2007) - signal to be transmitted, and c(t) = 5 cos(5000ft) - Carrier signal , (a) Sketch DSB-TC(f) (b) Find modulated signal bandwidth (c) Find modulation index (u), and power efficiency (n). 2. Sketch the mixer block diagram to convert di(t) to 02(t) and indicate all blocks parameters (a) 61(t) = 10 cos(200mt) cos(13000) (b) 02(t) = 10 cos(200 mt) cos(22000 nt))
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]
When the message signal m (t) =cos (2π fmt) and the
carrier signal is c(t)=cos (2π fct) ,
fm<< fc,
The modulated DSB-SC signal
SDSB-SC=m(t)cos(2πfct) is generated, and only
the upper sideband
To generate and transmit the SSB signal. As shown in the figure
below, the receiver is a local oscillator
cosine signal to the received signal and passes it through a
low-pass filter. Answer the following questions.
(a) Draw the waveform of DSB-SC modulated signal
SDSB-SC(t)
(b)Find the result...
1. A modulating signal m(t) is given by m(t) = (cos(20nt) – cos(40nt)) a. Find and sketch the spectrum of DSB-SC signal 2m(t)cos (100nt) b. Verify that the DSB-SC modulated signal can be recovered using coherent detection
1. A modulating signal m(t) is given by m(t) = (cos(20nt) – cos(40ſt)) a. Find and sketch the spectrum of DSB-SC signal 2m(t)cos (100nt) b. Verify that the DSB-SC modulated signal can be recovered using coherent detection. 15 nts
1. A modulating signal m(t) is given by m(t) = 5 (cos(20nt) – cos(40nt)) a. Find and sketch the spectrum of DSB-SC signal 2m(t)cos (100nt) b. Verify that the DSB-SC modulated signal can be recovered using coherent detection.