WorksheetsCMC Quiz
Total questions: 20
Worksheet time: 11mins
A spectrum of 30 MHz is allocated to a cellular system which uses two 25 KHz simplex channels to provide full duplex voice channels. What is the number of channels available per cell for 4 cell reuse factor?
150 channels
600 channels
50 channels
85 channels
Which type of antenna is used for edge excited cells?
Omnidirectional antenna
Grid antenna
Sectored directional antenna
Dipole antenna
Capacity of a cellular system is directly proportional to __________
Number of cells
Number of times a cluster is replicated
Number of Base stations
Number of users
What happen to a call in fixed channel strategy, if all the channels in a cell are occupied?
Queued
Cross talk
Blocked
Delayed
In fixed channel assignment strategy, each cell is allocated a predetermined set of _______
Voice channels
Control channels
Frequency
base stations
In dynamic channel assignment strategy, base station requests channel from ____________
Neighbouring cell
MSC
Neighbouring cluster
Neighbouring base station
Paging system uses which mode of transmission?
Full duplex
Simplex
Half Duplex
Duplex
The time over which a call can be maintained within a cell without handoff is called _________
Run time
Peak time
Dwell time
Cell time
Umbrella cell approach is possible by using _________
Antenna of same heights
Antenna of different heights
Different voice channels
Different control channels
Which of the following problem occur due to adjacent channel interference?
Blocked calls
Cross talk
Near-far effect
Missed calls
What is the unit for the measure of traffic intensity?
Meters
Henry
Ohm
Erlang
Path loss in free space model is defined as difference of ________
Effective transmitted power and gain
Effective received power and distance between T-R
Gain and received power
Effective transmitter power and receiver power
GOS is typically given as a likelihood that a ________
Call is in progress
Channels are busy
Call is blocked
Channels are free
The angle at which no reflection occurs in the medium of origin is called _________
Azimuth angle
Elevation angle
Brewster angle
Inclination angle
The phase difference between a direct line of sight path and diffracted path is function of _______
Height and position of obstruction
Only height
Operating frequency
Polarization
The actual received signal is ______ than what is predicted by reflection and diffraction model.
Weaker
Equal
Stronger
Very weak
Flat fading channel is also known as _______________
Amplitude varying channel
Wideband channel
Phase varying channel
Frequency varying channel
For fast fading channel, the coherence time of the channel is smaller than _______ of transmitted signal.
doppler spread
bandwidth
Symbol period
Coherence bandwidth
Space diversity s also known as ________
Antenna diversity
Time diversity
Frequency diversity
Polarization diversity
In maximal ratio combining, the output SNR is equal to __________
Mean of all individual SNRs
Maximum of all SNRs
Sum of individual SNRs
Minimum of all SNRs
