Download PTU M.Tech. ECE 1st Semester 36205 ADVANCE COMMUNICATION SYSTEM Question Paper

Download PTU. I.K. Gujral Punjab Technical University (IKGPTU) M.Tech. ECE 1st Semester 36205 ADVANCE COMMUNICATION SYSTEM Question Paper.

1 | M-36205 (S9)-1863

Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(ECE) (Sem.?1)
ADVANCE COMMUNICATION SYSTEM
Subject Code : EC-504
M.Code : 36205
Time : 3 Hrs. Max. Marks : 100

INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.

1. a) What is the significance of carrier recovery and clock recovery circuit in digital
communication system? Explain how these can be achieved. 10
b) Define Bit rate and Baud rate. Determine peak frequency deviation, minimum
bandwidth and baud rate for a binary FSK signal with a marks frequency of 49 KHz,
a space frequency of 51 KHz and input bit rate. 10
2. a) Discuss the fundamental limitations on the performance of communication systems.
10
b) What is the difference between PCM and DPCM? Give the working of each. 10
3. a) Discuss the significance of WDM in modern optical communication systems. How
does it differ from TDM? 10
b) Explain SONET in brief. 10
4. a) Explain different Transmission protocols used in mobile communication. 10
b) Discuss the role of QoS in mobile communication. 10
5. Explain :
a) GPRS 10
b) Delta modulation 10
FirstRanker.com - FirstRanker's Choice
1 | M-36205 (S9)-1863

Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(ECE) (Sem.?1)
ADVANCE COMMUNICATION SYSTEM
Subject Code : EC-504
M.Code : 36205
Time : 3 Hrs. Max. Marks : 100

INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.

1. a) What is the significance of carrier recovery and clock recovery circuit in digital
communication system? Explain how these can be achieved. 10
b) Define Bit rate and Baud rate. Determine peak frequency deviation, minimum
bandwidth and baud rate for a binary FSK signal with a marks frequency of 49 KHz,
a space frequency of 51 KHz and input bit rate. 10
2. a) Discuss the fundamental limitations on the performance of communication systems.
10
b) What is the difference between PCM and DPCM? Give the working of each. 10
3. a) Discuss the significance of WDM in modern optical communication systems. How
does it differ from TDM? 10
b) Explain SONET in brief. 10
4. a) Explain different Transmission protocols used in mobile communication. 10
b) Discuss the role of QoS in mobile communication. 10
5. Explain :
a) GPRS 10
b) Delta modulation 10
2 | M-36205 (S9)-1863

6. a) Discuss in detail the basic transmission theory of Satellite Communication. 15
b) An earth station antenna has diameter of 30 m has an overall efficiency of 68% and is
used to receive a signal of 4150 MHz. At this frequency the noise temperature is 79K
when the antenna appoints to the satellite at an elevation angle of 28 degree.
Determine earth station G/T ratio under these conditions. If heavy rain causes sky
temperature to increase so that the system temperature increases to 88 K, What will
be the new G/T value? 5
7. a) Discuss how the design of satellite links is accomplished for specified C/N values?
10
b) Explain CDMA used in satellite communications. What are its advantages? 10
8. Discuss :
a) Switching in Optical networks 10
b) Fading in mobile communication. 10










NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
FirstRanker.com - FirstRanker's Choice