Tutorial sheet -1
1.Discuss the concept of spread spectrum technique used in communication.What are different types of
spread spectrum techniques.Explain it.
2.Using a suitable block diagram explain the working of DSSS transmitter & receiver.
3.Compare FHSS with THSS.
4.Explain maximal length sequence.Discuss different properties.
5.Write short note on PN sequence.
Tutorial sheet -2
1.What is link engineering?Define the free space loss & its effect on LOS microwave communication.
Find out the expression for free space loss for a directive antenna.
2.Explain the Fresnel zone clearance concept.
3.What do you mean by effective earth radius?Find the relation between active earth radius & effective
earth radius.
4.Explain the bending of radio beams.
5.Explain the transmitter & receiver block diagram of a microwave link.
6.Explain the concept of fading in wirless communication.Describe the propagation mechanism &
Different propagation modes.
7.Explain the different types of fading multipath channels.
8.List & discuss the major causes of fading
Tutorial sheet -3
1.what is CDMA? In what way it is superior to TDMA?Mention the potential application of CDMA.
2.Explain the concept of FDMA & TDMA.Find the channel capacity of FDMA & TDMA.
3.Derieve an expression for cell capacity of DS-CDMA systems.
4.Compare synchronous TDMA & Asynchronous TDMA.
5.Find the spectral efficiency of TDMA.
Tutorial sheet -4
1.Explain the frequency reuse concept in cellular network.Discuss the Co-channel interference &
Adjacent channel interference.
2.Explain GSM architecture with a suitable block diagram.Discuss HLR,VLR & EIR.
3.What is hand-off.Discuss the hand-off principles.Discuss different types of hand-off techniques.
4.What is GOS? Explain the LCC & LCD systems.Give expressions for probability of call blocking &
Call delayed.
5.Discuss GSM codec with suitable block diagram of speech coder & speech encoder.
6.Explain the principle & working of WLL services.How is WLL different from cellular system.
7.Discuss wirless LAN.
Tutorial sheet -5
1.Write Keplers law of planetary motion?Derieve an expression for equation of orbit.Also find the
Orbital period & velocity.
2.What is GEO. Compare GEO & LEO.
3.Critically discuss the features of LNA used in SATCOM.How do the qualities of LNA affect the overall
Performance of transponder.
4.Discuss the satellite communication system using a neat block diagram.Explain how a satellite is
Tracked in its location using TT & C system.
5.What do you understand by look angle,elevation angle & coverage angle?