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(2) Find the output of the DSB-SC demodulator shown in Fig.Q2 below, if the local oscillator...
Oscillator such that its output is conizrf,1+ φ) . Tee Yoput the DSB-SC modulated signal. The noi...
oscillator such that its output is conizrf,1+ φ) . Tee Yoput the DSB-SC modulated signal. The noise power spectrat devsity is No and tow w-pass tilter has a bandwidth of W a) Find an expression for the coherent detector oustput assunmiog, that te message power is P b) Show that the post-detection SNR is reduced by the tactor teo o compared to the case when there is no phase errot in the synctromtzed oncilator tn pass RF sghal Signal f...
When the message signal m (t) =cos (2π fmt) and the carrier signal is c(t)=cos (2π fct) , fm<&...
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...
8 8.6-4 For a DSB-SC system with a channel noise PSD of Sn() 10-12 and a baseband signal of bandw...
8 8.6-4 For a DSB-SC system with a channel noise PSD of Sn() 10-12 and a baseband signal of bandwidth 5 kHz, the receiver output SNR is required to be at least 47 dB. The receiver is as shown in Fig. 8.30. (a) What must be the signal power Si received at the receiver input? (b) What is the receiver output noise power No? (c) What is the minimum transmitted power Sr if the channel transfer function is He)10-3 over...
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos...
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos(wt+0), where m(t) is a signal band-limited to B Hz. The following figure shows a DSB- SC AM modulator available in the stockroom. The carrier generator available generates not cos(wct), but cos (wct). Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. 3. What kind of filter is required...
4. A DSB-SC signal is modulated by m(t) = 7coswyt + 3coswqt, with f1 = 0.2...
4. A DSB-SC signal is modulated by m(t) = 7coswyt + 3coswqt, with f1 = 0.2 kHz, and Ac = 5. (25 points) a. Write an expression for the DSB-SC signal and sketch a picture of this wave. b. Evaluate and sketch the spectrum for this DSB-SC signal. C. Find the value of the normalized average power. d. Find the value of the normalized PEP.
Problem A DSB-SC AM signal is modulated by the signal m(t) = cos(4000st) - cos(1000nt). The...
Problem A DSB-SC AM signal is modulated by the signal m(t) = cos(4000st) - cos(1000nt). The modulated signal is u(t) = 200 m(t) cos(21tfct), where f=1 MHz. 1. Determine and sketch the spectrum of the AM signal. 2. Determine the average power in the frequency components 3. Find a resonable choice of R and C to design an envelope detector for this DSB-SC AM signal.
In a coherent detection process, a sinusoidally modulated DSB-SC wave, s(t) = c(t)m(t) where the carrier...
In a coherent detection process, a sinusoidally modulated DSB-SC wave, s(t) = c(t)m(t) where the carrier wave is c(t) =Accos(2πfct) and the message signal is m(t) = Amcos(2πfmt), is applied to a product modulator using a locally generated sinusoid of Ac’ amplitude and is out of phase by φ with respect to the sinusoidal carrier used in the modulation. (a) Draw the block diagram of the coherent detection process and label the block diagram with the information provided above accordingly....
1. DSC-SC Modulation. Consider a message signal m(t) = 3 sinc(10t) this is applied to a...
1. DSC-SC Modulation. Consider a message signal m(t) = 3 sinc(10t) this is applied to a product modulator with a carrier wave c(t) = 2 cos(100nt). (a) (5 points) Find and plot the Fourier transform S(f) of the DSB-SC modulated signal s(t). (b) (5 points) What is the bandwidth of s(t)? (c) (5 points) The signal s(t) is next applied to filter h(t), the output of the filter is named y(t). Now assume that I $2/300, If|< 30, H(f) =...
can you please solve this problem step by step, thank you!! 1. Consider a DSB-SC signal...
can you please solve this problem step by step, thank
you!!
1. Consider a DSB-SC signal with noise passes through a demodulator shown below. ViC0) 2(0) но но 0) The input signal plus noise is v,(t)-5,() + n'(t) where 5,0): Am(1)cos2r/rt, m(1) cos 2π/J is the message signal with f-</м , carrier frequency is f> fe , and noise n' (r) has power spectral density function G,じ)= η . The local carrier is v,(1)s 2 cosZrw. The carrier filter is...
5 (15pt) In Quadrature-Carrier Multiplexing, two baseband signals mi(t) and m2(t) can be modulated on one...
5 (15pt) In Quadrature-Carrier Multiplexing, two baseband signals mi(t) and m2(t) can be modulated on one single carrier frequency by taking advantage of the in-phase component and the auadratiure component of the carrier signa! At receiver side, let's assume the received signal r(t) is r(t) Acmi (t) cos(2n fet) + Acm2 (t) sin(2r/et) Employing a coherent detector, the mi) and m2(t) can be extracted from the received signal. Assuming the signal generated from the local oscillator at the receiver is...
oscillator such that its output is conizrf,1+ φ) . Tee Yoput the DSB-SC modulated signal. The noise power spectrat devsity is No and tow w-pass tilter has a bandwidth of W a) Find an expression for the coherent detector oustput assunmiog, that te message power is P b) Show that the post-detection SNR is reduced by the tactor teo o compared to the case when there is no phase errot in the synctromtzed oncilator tn pass RF sghal Signal f...
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...
8 8.6-4 For a DSB-SC system with a channel noise PSD of Sn() 10-12 and a baseband signal of bandwidth 5 kHz, the receiver output SNR is required to be at least 47 dB. The receiver is as shown in Fig. 8.30. (a) What must be the signal power Si received at the receiver input? (b) What is the receiver output noise power No? (c) What is the minimum transmitted power Sr if the channel transfer function is He)10-3 over...
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos(wt+0), where m(t) is a signal band-limited to B Hz. The following figure shows a DSB- SC AM modulator available in the stockroom. The carrier generator available generates not cos(wct), but cos (wct). Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. 3. What kind of filter is required...
4. A DSB-SC signal is modulated by m(t) = 7coswyt + 3coswqt, with f1 = 0.2 kHz, and Ac = 5. (25 points) a. Write an expression for the DSB-SC signal and sketch a picture of this wave. b. Evaluate and sketch the spectrum for this DSB-SC signal. C. Find the value of the normalized average power. d. Find the value of the normalized PEP.
Problem A DSB-SC AM signal is modulated by the signal m(t) = cos(4000st) - cos(1000nt). The modulated signal is u(t) = 200 m(t) cos(21tfct), where f=1 MHz. 1. Determine and sketch the spectrum of the AM signal. 2. Determine the average power in the frequency components 3. Find a resonable choice of R and C to design an envelope detector for this DSB-SC AM signal.
1. DSC-SC Modulation. Consider a message signal m(t) = 3 sinc(10t) this is applied to a product modulator with a carrier wave c(t) = 2 cos(100nt). (a) (5 points) Find and plot the Fourier transform S(f) of the DSB-SC modulated signal s(t). (b) (5 points) What is the bandwidth of s(t)? (c) (5 points) The signal s(t) is next applied to filter h(t), the output of the filter is named y(t). Now assume that I $2/300, If|< 30, H(f) =...
can you please solve this problem step by step, thank
you!!
1. Consider a DSB-SC signal with noise passes through a demodulator shown below. ViC0) 2(0) но но 0) The input signal plus noise is v,(t)-5,() + n'(t) where 5,0): Am(1)cos2r/rt, m(1) cos 2π/J is the message signal with f-</м , carrier frequency is f> fe , and noise n' (r) has power spectral density function G,じ)= η . The local carrier is v,(1)s 2 cosZrw. The carrier filter is...
5 (15pt) In Quadrature-Carrier Multiplexing, two baseband signals mi(t) and m2(t) can be modulated on one single carrier frequency by taking advantage of the in-phase component and the auadratiure component of the carrier signa! At receiver side, let's assume the received signal r(t) is r(t) Acmi (t) cos(2n fet) + Acm2 (t) sin(2r/et) Employing a coherent detector, the mi) and m2(t) can be extracted from the received signal. Assuming the signal generated from the local oscillator at the receiver is...
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