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1 Question 5 pts What is the coherent demodulation? Question 1 pts What kind AM modulation can tr...
1. To transmit an AM signal, how would you minimize power requirement. If an 150 kW...
1. To transmit an AM signal, how would you minimize power requirement. If an 150 kW AM transmitter modulates at 95%, calculate the required power for one of the side band signals and determine its ratio with the AM transmitter power. [10] 2. Sketch and describe a simple AM Modulator circuit, and explain how it generates the AM signal with the signal status at each stage, starting from the mixture of information signal and carrier signal. [10] 3. Sketch and...
Question 1 0/1 pts An AM broadcast transmitter is modulated with: m (t)A cos 2Tfit + B cos 2Tf2t ...
Question 1 0/1 pts An AM broadcast transmitter is modulated with: m (t)A cos 2Tfit + B cos 2Tf2t where A 0.45 V B- 0.40 V, the carrier frequency is 100 kHz, and the amplitude of the carrier is 125 V. Find the normalized average power of the modulated signal State your answer in Watts, to two decimal places. You Answered 7812.59 Correct Answer 8520.51 margin of error+/-0.02
Question 1 0/1 pts An AM broadcast transmitter is modulated with: m...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amp...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amplitude spectrum, SPM(f), is shown below: Amplitude spectrum of the frequency modulated signal 2 -2 5000 4000 3000 2000 -1000 1000 2000 3000 4000 5000 frequency f [Hz] a) What is the carrier frequency fe? b) What is the message frequency fm c) What is the FM modulation index Bf? Is it a narrowband or a wideband signal? d) Using Carson's rule, estimate the transmission...
1. (9 points) In this Question, we are going to perform DSBSC modulation using MAT- LAB....
1. (9 points) In this Question, we are going to perform DSBSC modulation using MAT- LAB. The signal we want to use is a speech signal. Here is the block diagram of ths system we want to simulate: Modulation Demodulation ult gt) m(t) x Butterworth LPF mr(t) c(t) Gr(t) Figure 1: DSBSC modulation and demodulation. (a) Since we are working with speech signals, we will choose a sampling frequency that is much larger than the bandwidth of the signals. As...
Make sure you show all working and describe each step in your calculations. 1. A signum function ...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency of 2 KHz, resulting in a frequency deviation of 7 Khz.Calculate the bandwidth of the modulated signal. a) [1 Mark] [1.Mark] 0.5 mark] 2.5 Marks] b) Explain how noise immunity is achieved in FM With aid of a neatly labelled illustration describe the Frequency Shift Keying c) Discuss the advantages and de merits of Frequency modulation d) [5 Marks] Question 2 n SSB transmitter...
DO NOT SOLVE THE QUESTION! THAT IS NOT WHAT I AM ASKING. THIS IS THE SECOND...
DO NOT SOLVE THE QUESTION! THAT IS NOT WHAT I AM ASKING.
THIS IS THE SECOND TIME I AM POSTING THIS Q BECAUSE THEY DID NOT
ANSWER MY Q.
I just want to know for 1a, answer is a bandpass
filter.
Can a LOW PASS FILTER also work?
You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos(w m(t) is a signal bandlimited to B Hz. Figure 1 shows a DSB-SC modulator available in the...
1. To transmit an AM signal, how would you minimize power requirement. If an 150 kW AM transmitter modulates at 95%, calculate the required power for one of the side band signals and determine its ratio with the AM transmitter power. [10] 2. Sketch and describe a simple AM Modulator circuit, and explain how it generates the AM signal with the signal status at each stage, starting from the mixture of information signal and carrier signal. [10] 3. Sketch and...
Question 1 0/1 pts An AM broadcast transmitter is modulated with: m (t)A cos 2Tfit + B cos 2Tf2t where A 0.45 V B- 0.40 V, the carrier frequency is 100 kHz, and the amplitude of the carrier is 125 V. Find the normalized average power of the modulated signal State your answer in Watts, to two decimal places. You Answered 7812.59 Correct Answer 8520.51 margin of error+/-0.02
Question 1 0/1 pts An AM broadcast transmitter is modulated with: m...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amplitude spectrum, SPM(f), is shown below: Amplitude spectrum of the frequency modulated signal 2 -2 5000 4000 3000 2000 -1000 1000 2000 3000 4000 5000 frequency f [Hz] a) What is the carrier frequency fe? b) What is the message frequency fm c) What is the FM modulation index Bf? Is it a narrowband or a wideband signal? d) Using Carson's rule, estimate the transmission...
1. (9 points) In this Question, we are going to perform DSBSC modulation using MAT- LAB. The signal we want to use is a speech signal. Here is the block diagram of ths system we want to simulate: Modulation Demodulation ult gt) m(t) x Butterworth LPF mr(t) c(t) Gr(t) Figure 1: DSBSC modulation and demodulation. (a) Since we are working with speech signals, we will choose a sampling frequency that is much larger than the bandwidth of the signals. As...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency of 2 KHz, resulting in a frequency deviation of 7 Khz.Calculate the bandwidth of the modulated signal. a) [1 Mark] [1.Mark] 0.5 mark] 2.5 Marks] b) Explain how noise immunity is achieved in FM With aid of a neatly labelled illustration describe the Frequency Shift Keying c) Discuss the advantages and de merits of Frequency modulation d) [5 Marks] Question 2 n SSB transmitter...
DO NOT SOLVE THE QUESTION! THAT IS NOT WHAT I AM ASKING.
THIS IS THE SECOND TIME I AM POSTING THIS Q BECAUSE THEY DID NOT
ANSWER MY Q.
I just want to know for 1a, answer is a bandpass
filter.
Can a LOW PASS FILTER also work?
You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos(w m(t) is a signal bandlimited to B Hz. Figure 1 shows a DSB-SC modulator available in the...
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