Wireless
Communication
2 marks questions
Unit-1
1.
Different
types of multiple access schemes
2.
Significance
of frequency reuse in cellular networks
3.
Differentiate
cellular telephony and cordless telephony
4.
When
does a WLAN become a PAN
5.
Fading
6.
Difference
between wired and wireless communication
7.
Difference
between constructive and destructive interference
8.
Functions
of MSC in cellular networks
9.
Important
features of trunking radio
10.
Paging
system
11.
Find
out the co-channel cell for the cellular network with the cluster size of 7
12.
Draw
data rate versus mobility graph for various application
13.
Types
of man-made noise
14.
Co-channel
reuse ratio
15.
Frequency
range for satellite communication
16.
BAN
17.
Methods
of implementation of CSMA
Unit-2
1.
Different
types of wireless channels
2.
Frequency
selective fading? How to avoid fading
problem
3.
Compute
the Rayleigh distance of a square antenna with 20 dB gain
4.
Any
two properties of wideband channel
5.
Deterministic
channel model
6.
Link
budget and need for link calculation
7.
Reflection
8.
Diffraction
9.
Scattering
10.
Doppler
shift
11.
Huygen’s
principles
12.
Difference
between coherence bandwidth and coherence time
13.
Flat
fading
14.
Mention
the narrowband models
15.
Epstein-peterson
method
16.
Mention
the wideband models
Unit-3
1.
Advantages
of QPSK
2.
Differentiate
between MSK and GMSK
3.
Draw
the mathematical link model for analysis of modulation schemes
4.
OQPSK
5.
Requirements
to select the modulation types in wireless communication
6.
Advantages
and disadvantages of MSK
7.
Frequency
dispersion
8.
Delay
dispersion
9.
Raised
cosine filter
10.
Advantages
of Nyquist cosine pulse
11.
GMSK
12.
Compare
spectrum of utilization of BPSK and QPSK
13.
QPSK
14.
MSK
Unit-4
1.
Different
types of speech coding techniques
2.
Significance
of linear and decision feedback equalizer
3.
Any
four common methods of micro diversity
4.
Hamming
distance and Euclidean distance between two codes
5.
Difference
between macro and micro diversity
6.
Differentiate
ZF and MMSE equalizers
7.
Equalizers
8.
Need
for equalization
9.
Diversity
concept
10.
Selection
diversity
11.
Uses
of Decision feedback equalizer
Unit-5
1.
Effects
of multipath propagation on CDMA
2.
List
a few wireless network standards
3.
Principle
of OFDM modulation scheme
4.
Three
important functional blocks of GSM system
5.
Cyclic
prefix
6.
Spread
spectrum technique
7.
Different
methods to increase the capacity of wireless system
8.
Example
for 1G, 2G and 3G cellular system
9.
2G
and 3G wireless standards
10.
Distinguish
between power control for the uplink and downlink in CDMA
11.
Features
of CDMA
12.
Methods
available for capacity increase in CDMA systems
13.
OFDM
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