MU Electronics and Telecom Engineering (Semester 8)
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary
1(a) What are the components of sensor nodes?
5 marks
6405
1(b) Explain CSMA/CA technique.
5 marks
9489
1(c) Explain the concept of trusted device with reference to Bluetooth.
5 marks
9554
1(d) Discuss two evolution paths for the GSM to offer 3G services.
5 marks
9490
2(a) Using the following data of for a GSM network, estimate the voice and traffic per subscriber. If there are 40 BTS sites, calculate voice and data traffic per cell.
Subscriber usage per month: 150 minutes
Day per month: 24 Buy hours per day: 6 Allocated spectrum: 4.8 MHz
Frequency reuse plan: 4/12
RF channel width: 200kHz(full rate)
Present number of subscribers in a zone: 50,000 Subscriber growth per year: 5%
Network roll-over period: 4year
Number of packet calls per session (NPCS): 5 (see Figure)
Number of packets within a packet call (NPP):25
Reading time between packet calls (Tr): 120s
Packet size (NBP): 480 bytes
Time interval between two packets inside a packet call (Tint): 0.01 s
Total packet service holding time during one hour( T tot): 3000 s
Busy hour packet sessions per subscriber:0.15
Penetration of data subscriber: 25%
Data rate of each subscriber: 48kbps
Packet transmission time: 10 s
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10 marks
9545
2(b) Explain the ZigBee technology. Discuss different network topologies that are supported in ZigBee.
10 marks
6388
3(a) Discuss WiMAX in detail and compare its performance with Wi-fi.
10 marks
6400
3(b) Explain link budget analysis and requirements of wireless Network.
10 marks
9499
4(a) Explain transmit diversity present in forward link of Cdma 2000.
10 marks
9548
4(b) What are sensor network management design issues? Elaborate any one with example.
10 marks
6426
5(a) Explain Bluetooth security features and Gives its protocol architecture
10 marks
6387
5(b) Draw the neat block diagram of UMTS architecture Explain all interfaces.
10 marks
9549
6(a) Write short notes on : HSDPA
10 marks
9488
6(b) Write short notes on : RFID
10 marks
6395