University : Victorian Institute of Technology UniLearnO is not sponsored or endorsed by this college or university.
Subject Code : MITS5003
Assignment Task:

Part – A

1. When you have two different networks, one is ATM (Asynchronous Transfer Mode) Network and the other is legacy Ethernet LAN inter-connected by a layer 3 device, With the help of a detailed diagram describe the process of PDU (Protocol Data Units) creation at each layer and how they communicate between the server in ATM network and client PC in Ethernet LAN. With the detailed diagram you also need to explain each layer of TCP/IP model interact and any sub-layers interact for communication to be successful

2. Compute the amplitude, frequency, time period and phase for each of the following equations

3. From the following figures, compute the maximum amplitude, frequency, time period and phase for each of the wave. The x-axis represents the time in sec and y-axis represents the amplitude.

4. You are communicating between two satellites. The transmission obeys the free space law. The signal is too weak. Your vendor offers you two options. The vendor can use a higher frequency that is triple the current frequency or can triple the effective area of both of the antennas. Which will offer you more received power or will both offer the same improvement, all other factors remaining equal? How much improvement in the received power do you obtain from the best option?

5. What is the maximum distance (i.e. distance to radio horizon) for a terrestrial microwave wireless link where the sending antenna is on a hilltop 550 meters above sea level and the receiver is a mobile car radio with antenna 10 meters above sea level?

6. If the maximum distance for LOS communication between the transmitter and the receiver is 20 Km, then calculate the heights of transmitting and receiving antennas such that the height of receiving antenna is double of the transmitting antenna.

Part – B

7. Imagine you wish to transmit your student ID number over wireless medium. First you will need to convert your student ID from its decimal (base 10) representation into a 28-bit binary (base 2) representation. For example, a student ID of 12345 will be 0011000000111001 in the binary form. Convert the binary data “0011000000111001” into analogue waveforms using the following modulation techniques:

 

8. For the above techniques, let suppose the time required to transmit one signal is 0.5 µsec. Compute the time required to send the whole data for each of these techniques.

9. What is the attenuation loss (in dB) of a communication link operating in free space at a frequency of 2.4 GHz over a distance of 12.5 Km?

10. Draw the 8 QAM Constellation Diagram having two different amplitude levels and four different phase levels.

 

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  • Posted on : June 17th, 2019

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