Question 23 - FM Implement the function described above in matlab by performing the following: 1. Sketching a flow chart
Posted: Sat May 14, 2022 3:44 pm
Question 23 - FM
Implement the function described above in matlab by performing
the following:
1. Sketching a flow chart to demonstrate the operation of this
function
2. Writing the matlab code to implement this function
3. Explain how noise can be suppressed in FM
4. State an advantage and a disadvantage of FM vs AM
transmission
5. Explain the operation of a Phase Lock Loop frequency
demodulator
6. Explain the preemphasis process
7. State a difference between ASK and PSK
Develop a function in matlab for estimating the: i) modulation index, mf, ii) bandwidth, BW, iii) the maximum phase shift, ¢, and improved signal-to-noise ratio, SNI, for full FM transmission using the following formulae: m; = fofu BW = 2fxN = ø=sin(1/SNO) 8= f 0/57.3 SNI = fo 18 Where fn is the maximum frequency deviation, fm is the modulating frequency, N is the number of significant sidebands, SNO is the original signal-to-noise ratio before demodulation, and SNI is the improved signal-to-noise ratio after demodulation. In this function the value of N=4 is to be hard coded.
- Question 23 Fm Implement The Function Described Above In Matlab By Performing The Following 1 Sketching A Flow Chart 1 (53.43 KiB) Viewed 72 times
the following:
1. Sketching a flow chart to demonstrate the operation of this
function
2. Writing the matlab code to implement this function
3. Explain how noise can be suppressed in FM
4. State an advantage and a disadvantage of FM vs AM
transmission
5. Explain the operation of a Phase Lock Loop frequency
demodulator
6. Explain the preemphasis process
7. State a difference between ASK and PSK
Develop a function in matlab for estimating the: i) modulation index, mf, ii) bandwidth, BW, iii) the maximum phase shift, ¢, and improved signal-to-noise ratio, SNI, for full FM transmission using the following formulae: m; = fofu BW = 2fxN = ø=sin(1/SNO) 8= f 0/57.3 SNI = fo 18 Where fn is the maximum frequency deviation, fm is the modulating frequency, N is the number of significant sidebands, SNO is the original signal-to-noise ratio before demodulation, and SNI is the improved signal-to-noise ratio after demodulation. In this function the value of N=4 is to be hard coded.