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The input r(t) to a DSBSC receiver is a DSB signal s(t) = A m(t)cos (21fet)...
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...
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...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise given as, 0, otherwise with B-200 kHz and N 10W Hz. The message bandwidth is 10 kHz and its average power is 10 W. Assume A,-1, 100kHz, and the channel attenuates signal power by a factor of 1000 (-30 dB). Assume that a suitable band-pass filter is used at the receiver to limit out-of-band noise. (a) Determine the average signal power at the receiver...
3. The following is the amplitude spectrum of a DSB+carrier AM signal x(f) 1.5 1.5 1.5 1.5 f (Hz)...
3. The following is the amplitude spectrum of a DSB+carrier AM signal x(f) 1.5 1.5 1.5 1.5 f (Hz) 1920 2000 2080 2080 2000 1920 (a) (10 points) Determine the carrier frequency fe the carrier amplitude Ac the mod ulation index ,, and the message signal m(t) of the AM signal. (b) (10 points) Given that μ2Sm 0.18, find the output SNR (in dB) if the received signal includes white noise with a power spectral density of η/2-10-10 W/Hz. (c)...
Can you please explain the solution step by step. P.S write needly :) Problem 9.11 Derive...
Can you please explain the solution step by step.
P.S write needly :)
Problem 9.11 Derive an expression for the post-detection signal-to-noise ratio of the coherent receiver of Fig. 9.6, assuming that the modulated signal s0) is produced by sinusoidal modulating wave m(1)-A, cos(2p.J) Perform your calculation for the following two receiver types: (a) Coherent DSB-SC receiver (b) Coherent SSB receiver. Assume the message bandwidth is f. Evaluate these expressions-r the received signal strength is 100 picowatts, the noise spectral...
Q.2 ICO2]10 Marks] The signal g(t) forms the input to the LPF circuit shown in the figure, where R l,and y(Dis the output. If the power spectral density (PSD) of the signal ge) is (a) The autoc...
Q.2 ICO2]10 Marks] The signal g(t) forms the input to the LPF circuit shown in the figure, where R l,and y(Dis the output. If the power spectral density (PSD) of the signal ge) is (a) The autocorrelation of g(t) (b) The 3-dB bandwidth of the LPF (c) The power of g(t) and y(t) (d) Based on your answers above, will it be better if the signal has more or less bandwith? (e) If a white noise of PSD No/2 is...
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal...
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal is 155 dB (in passing from the input to the transmitting antenna to the output of the receiving antenna), and the available mean power-spectral density of the noise in the system from all sources has a mean power spectral density level 10-18 W/Hz (as if added at the receiving antenna's output). The bandwidth of the message signal m(t) is 8 KHz. Determine the output...
Problem 4 A DSB-LC signal o(t) = [A + f(t)]cos(w-t), with A=5, is the result of...
Problem 4 A DSB-LC signal o(t) = [A + f(t)]cos(w-t), with A=5, is the result of modulating f(t) = cos(W) + 2cos( 3mt), where a.) What is the modulation index? b) What is the modulation efficiency? c) What is the bandwidth of (t)? d) If before modulation, f(t) is multiplied by a gain c, what is the largest value of a such that an envelope detector may be used at the receiver.
5) given the following PM modulated signal equation, determine the original message equation, m(t) . s(t)=...
5) given the following PM modulated signal equation, determine the original message equation, m(t) . s(t)= 3.5cos(2π2E9t + 0.5cos(2π6000t)), Kp=0.1 (hz/v) a) m(t)=0.16cos(2π6000t) b) m(t) = 5cos(2π6E3t) c) m(t) = 5cos(2π2E9t) d) m(t) = 0.16cos(2π2.4E9t) 6) given the following message and carrier waves. Determine the AM signal equation and (DSB-LC) bandwidth: m(t) =2sin(2π10KHz*t). c(t) =3sin(2π2.4E9Hz*t) a) 5[1+0.6sin(200πt)]sin(2π10E9t), BW=10kHz b) 3[1+0.67 sin(2π10E3t)]sin(2π2.4E9t), BW=20kHz c) 3[1+0.6sin(2.4GHz*πt)]sin(2π10E3Hz*t), BW=20kHz d) 3[1+1.67 sin(2π50t)]sin(2π10E9tt), BW=10kHz 7) amplitude used in a communication path will increase both signal...
2. A DSBSC signal has the information signal m(t) and the carrier cos(wct). The received signal...
2. A DSBSC signal has the information signal m(t) and the carrier cos(wct). The received signal is r(c) Assume there is no propagation delay and power dissipation. a) Draw the block diagram of the transmitter b) Draw the typical coherent DSBSC demodulator. c) A n alternate DSBSC demodulator is given below. Complete the demodulator design by specitying the black box. Use analysis to justify your design of the black box. 2 m (t) Black Bex Ytt)
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...
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...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise given as, 0, otherwise with B-200 kHz and N 10W Hz. The message bandwidth is 10 kHz and its average power is 10 W. Assume A,-1, 100kHz, and the channel attenuates signal power by a factor of 1000 (-30 dB). Assume that a suitable band-pass filter is used at the receiver to limit out-of-band noise. (a) Determine the average signal power at the receiver...
3. The following is the amplitude spectrum of a DSB+carrier AM signal x(f) 1.5 1.5 1.5 1.5 f (Hz) 1920 2000 2080 2080 2000 1920 (a) (10 points) Determine the carrier frequency fe the carrier amplitude Ac the mod ulation index ,, and the message signal m(t) of the AM signal. (b) (10 points) Given that μ2Sm 0.18, find the output SNR (in dB) if the received signal includes white noise with a power spectral density of η/2-10-10 W/Hz. (c)...
Can you please explain the solution step by step.
P.S write needly :)
Problem 9.11 Derive an expression for the post-detection signal-to-noise ratio of the coherent receiver of Fig. 9.6, assuming that the modulated signal s0) is produced by sinusoidal modulating wave m(1)-A, cos(2p.J) Perform your calculation for the following two receiver types: (a) Coherent DSB-SC receiver (b) Coherent SSB receiver. Assume the message bandwidth is f. Evaluate these expressions-r the received signal strength is 100 picowatts, the noise spectral...
Q.2 ICO2]10 Marks] The signal g(t) forms the input to the LPF circuit shown in the figure, where R l,and y(Dis the output. If the power spectral density (PSD) of the signal ge) is (a) The autocorrelation of g(t) (b) The 3-dB bandwidth of the LPF (c) The power of g(t) and y(t) (d) Based on your answers above, will it be better if the signal has more or less bandwith? (e) If a white noise of PSD No/2 is...
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal is 155 dB (in passing from the input to the transmitting antenna to the output of the receiving antenna), and the available mean power-spectral density of the noise in the system from all sources has a mean power spectral density level 10-18 W/Hz (as if added at the receiving antenna's output). The bandwidth of the message signal m(t) is 8 KHz. Determine the output...
Problem 4 A DSB-LC signal o(t) = [A + f(t)]cos(w-t), with A=5, is the result of modulating f(t) = cos(W) + 2cos( 3mt), where a.) What is the modulation index? b) What is the modulation efficiency? c) What is the bandwidth of (t)? d) If before modulation, f(t) is multiplied by a gain c, what is the largest value of a such that an envelope detector may be used at the receiver.
2. A DSBSC signal has the information signal m(t) and the carrier cos(wct). The received signal is r(c) Assume there is no propagation delay and power dissipation. a) Draw the block diagram of the transmitter b) Draw the typical coherent DSBSC demodulator. c) A n alternate DSBSC demodulator is given below. Complete the demodulator design by specitying the black box. Use analysis to justify your design of the black box. 2 m (t) Black Bex Ytt)
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