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Write down the difference between encoder and multiplexer? What are various kinds of ROMs?
Write VHDL code for 8-bit parallel-in serial-out shift register. Write down advantages and applications of FPGAs?
Write down the advantages of CPLDs over FPGAs? What do you understand by overloading?
Write an example of Concurrent and Sequential Signal Assignments. What do you understand by generics?
What do you mean by generate statement? Write VHDL code to develop four bit shift register.
Write a behavioural architecture code for a 4 bit tristate bus. What is the role of "bus hold logic" in CPLD/FPGA?
Compare and describe significant features of different digital modulation techniques. Explain and compare SCPC and CSSB systems.
What do you understand by geostationary orbit. Write down its advantage? Why the satellite uplink frequencies different from downlink frequency?
Explain what you know about mobile satellite networks. Design the earth station using antenna.
Describe the transponder, forward link and reverse link. Write down the advantages and disadvantages of non-linear amplifier.
Explain the application of satellite for telephone services. Draw the earth station using antenna.
Where do we prefer satellite communication? Write down one disadvantage in comparison to terrestrial link.
Derive SNR for, optical satellite link receiver. Describe the significance of UW detection in TDMA.
Draw and describe block diagram of a satellite transponder. Compare various digital modulation schemes used in satellite communication system.
Describe the four phase PSK detector with block diagram. Explain TDMA super frame. How it is different from simple TDMA frame?
Describe the modern concept of cable transmission network.
Briefly explain the use of tracking and pointing in satellite communication.
Explain shot, thermal noise mechanisms in optical receivers.
Where do you use distributed feedback laser (DFB) structures? What do you mean by Single longitudinal Mode (SLM) laser?
Explain the working and features of tunable semiconductor lasers.
What is the concept of four wave mixing? describe. Describe briefly the characteristics of optical materials.
ompute the refractive indices of the core and the cladding materials of an optical fibre whose NA = 0.35 and Δ = 0.01.
What are the direct band gap and indirect band gap semiconductors? What do you mean by absorption, spontaneous emission and stimulated emission in a two level energy system?
What do you mean by Noise? List and describe different kinds of noises encountered in an optical communication link?
Write down the advantages of using code division multiplexing.