Wireless Network and Mobile Communication : End Sem Question ( 5th Sem )

Wireless Network and Mobile Communication

End Semester Examination, 2022-23
B. Tech - Semester : 05
Time : 03 hrs. - Max. Marks : 100

Instructions:

1. All questions are Compulsory
2. Assume missing data suitably, if any.

Section : A ( 4 x 10 = 40 Marks )

All questions are compulsory

1. How Brewster's angle can be calculated?
2. What is large scale propagation?
3. Explain the concept of different hand-off strategies.
4. Explain reflection, diffraction and scattering.
5. Briefly explain the concept of FDMA.
6. What is the difference between micro-cell and macro-cell?
7. What is the forward CDMA channel?
8. What is the importance of IS95?
9. What is OFDM?
10. Enlist some different spread spectrum technologies.

Section : B ( 3 x 6 = 18 Marks )

All questions are compulsory

1. Define GSM? Describe the key characteristics of GSM in details.
   
   OR
   Explain a summary table for GSM air interface specification.
   
2. Why power control is necessary in IS95?
OR
What are different CDMA Channels? Explain the functionality.
3. Define IMT2000 standard? Give the properties of IMT2000.
   
   OR
   Write the advantages of 4G.

Section : C ( 3 x 10 = 30 Marks )

All questions are compulsory

1. Draw the GSM architecture. Explain each component in brief.
   
   OR
   Explain the different elements of GSM radio-subsystem.
2. Draw the GSM frame structure along with the explanation of each component.
   
   OR
   Explain the different components of forward CDMA Channels. Explain in details.
   
3. Draw the architecture of IMT2000. Write the applications of IMT2000.
   
   OR
   What are the weaknesses of 5G technology compared with 4G?

Section : D ( 1 x 12 = 12 Marks )

All questions are compulsory

1. Why is NGN important for wireless communication? Explain the fundamental aspects of NGN with suitable example.
   
   OR
2. What are different spread spectrum technologies. Explain each in details.

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