Q.1
Power bandwidth is also called
  • absolute bandwidth
  • null to null bandwidth
  • 3 db bandwidth
  • zero db bandwidth
Q.2
Of the following is defined as the range of frequencies over which the signal has a non zero power spectral density?
  • null to null bandwidth
  • half power bandwidth
  • 3 db bandwidth
  • absolute bandwidth
Q.3
Of the following is the ratio of signal energy per bit to noise power spectral density?
  • bandwidth efficiency
  • spectral density
  • power efficiency
  • power density
Q.4
Is analog version of first generation cordless telephones.
  • true
  • false
Q.5
Was the first generation of cordless telephones.
  • true
  • false
Q.6
Used to resolve and combine multipath components.
  • equalizer
  • registers
  • rake receiver
  • frequency divider
Q.7
Data in IS-is spread to a channel chip rate of
  • 1.2288 mchip/s
  • 9.6 mchip/s
  • 12.288 mchip/s
  • 0.96 mchip/s
Q.8
Is specified for reverse link operation in                    band.
  • 869-894 mhz
  • 849-894 mhz
  • 849-869 mhz
  • 824-849 mhz
Q.9
Uses same modulation technique for forward and reverse channel.
  • true
  • false
Q.10
Of the following is used by IS-95?
  • dsss
  • fhss
  • thss
  • hybrid
Q.11
Was not compatible with existing AMPS frequency band.
  • true
  • false
Q.12
Digital cellular system based on CDMA was standardized as
  • is-54
  • is-136
  • is-95
  • is-76
Q.13
Is the time duration of a bit if data is transmitted at 270.kbps in the channel?
  • 270.833 s
  • 3 μs
  • 3.692 μs
  • 3.692 s
Q.14
TDMA system is a measure of the percentage of transmitted data that contains information as opposed to providing overhead for the access scheme.
  • efficiency
  • figure of merit
  • signal to noise ratio
  • mean
Q.15
Allocates a single time per frame to different users.
  • true
  • false
Q.16
Overhead is required in TDMA due to                 transmission.
  • high, burst
  • high, continuous
  • low, burst
  • no, burst
Q.17
Of                transmissions in TDMA, the handoff process in
  • continuous, complex
  • continuous, simple
  • discontinuous, complex
  • discontinuous, simple
Q.18
Of the following is not true for TDMA?
  • single carrier frequency for single user
  • discontinuous data transmission
  • no requirement of duplexers
  • high transmission rates
Q.19
Utilized to allow synchronization of the receivers between different slots and frames.
  • preamble
  • data
  • guard bits
  • trail bits
Q.20
Systems transmit in a continuous way.
  • true
  • false
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