Chapter 4 CMT
Q.1)Define data bit,bit rate,channel capacity,channel bandwidth
Q.2)How digital encoding different from modulation?State different
techniques
Q.3)State difference between based and bit rate
Q.4)Describe S/N ratio , noise factor
Q.5)Describe unipolar technique with example ? State its
advantages and disadvantages
Q.6)Describe different polar encoding technique ? State its
advantages and disadvantages
Q.7)Compare RZ and Biphase recording technique
Q.8)Explain Manchester and differential Manchester with example ?
State its advantages and disadvantages
Q.9)Compare Synchronous and Asynchronous Data Transmission
Q.10)State necessity of digital transmission
Q.11)What is encoding ? State its types
Q.12)Compare Unipolar and bipolar encoding technique
Q.13)What is disadvantage of NRZ encoding
Q.14)How do RZ encoding attempt to solve the problem
Q.15)Discuss the two type of biphase encoding used in
Communication
Q.16)Describe B8ZS and HDB3 encoding technique? Explain with
suitable example
Q.17)Compare B8ZS and HDB3 encoding technique
Q.18)What is channel capacity and define its significant
Q.19)What is S/N ratio and state its significance
Q.20)What is serial transmission with example
Q.21)Describe types of serial communication with example
Q.22)Describe Synchronous and Asynchronous communication
with example
Q.23)Discuss advantage and disadvantage of Asynchronous
Transmission System
Q.24)Describe synchronous transmission system with example?
State its advantages and disadvantages
Q.25)Describe parallel transmission and Describe it with example
Q.26)Draw waves using all methods:
a).000110000001100000
b).10000000000100
c)0001100111
d)0000000000
e)1010101010101
f)111001001
g)1111111111
h)0101110
i)1101101
j)10110100
k)10111001
l)10100110
m)11001010
Chapter-5 – Satellite Communication
Q.1) Describe communication satellite with applications
Q.2) Describe with block diagram satellite communication system
and explain it’s working.
Q.3) List the frequency band used for satellite communication
Q.4) How many satellite needed to cover complete globe. State their
name and explain them.
Q.5) State and describe application of satellite communication.
Q.6) Explain various orbits in which satellite are placed (synch
orbit, polar and indined orbit)
Q.7) Describe LEO,GEO,MEO satellite? State their appliccations
and characteristics.
Q.8) Describe angle of elevation and azimuth angles of satellite.
Q.9) Describe uplink, downlink frequency? Why uplink freq. is more
than downlink freq. give example of uplink and downlink freq.
Q.10) List and describe satellite subsystem? Describe function of
each subsystem.
Q.11) State function of satellite.
Q.12) Describe uplink and downlink model related to satellite
communication.
Q.13) State function of up and down converter.
Q.14) Draw block diagram of transponder? State function of each
block and state it’s necessity and describe it’s operation.
Q.15) Explain parabolic dish antenna with neat sketch. Describe it’s
working.
Q.16) Describe antenna in satellite communication system.
Q.17) Describe different types of antenna and it’s operations.
Q.18) what is multiple access? State it’s different types.
Q.19) Describe basic concept, principle of operation, advantages &
disadvantages of 1)FDMA 2)CDMA 3)TDMA
Q.20) Compare FDMA, CDMA, TDMA.
Q.21) List problem related to TDMA & FDMA.
Q.22) Explain mobile communication system.
Q.23) Explain number of subscriber using MTSO &cellsite.
Q.24) State advantages & disadvantages of cellular mobile over
conventional telephony.
Q.25) which type of modulation is used in cellular phone and why.
Q.26) Describe handset cell processing, forward & reverse cell
processing.
Q.27) Describe frequency reuse, cell splitting handoff related to
mobile/cellular phone.
Q.28) what is handoff? Why handoff is needed? List and explain
types of handoff.
Q.29) Describe GSM cellular system.
Q.30) State function and advantage of MTSO.