Digital Communication Set 8

Electrical Engineering

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This set of Digital Communication Multiple Choice Questions & Answers (MCQs) focuses on Digital Communication Set 8

Q1 | Which of the following is not true for TDMA?
  • single carrier frequency for single user
  • discontinuous data transmission
  • no requirement of duplexers
  • high transmission rates
Answer: single carrier frequency for single user
Q2 | Because of transmissions in TDMA, the handoff process in                      
  • continuous, complex
  • continuous, simple
  • discontinuous, complex
  • discontinuous, simple
Answer: discontinuous, simple
Q3 |                    synchronization overhead is required in TDMA due to                 transmission.
  • high, burst
  • high, continuous
  • low, burst
  • no, burst
Answer: high, burst
Q4 |                      of 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
Answer: efficiency
Q5 | A TDMA system uses 25 MHz for the forward link, which is broken into radio channels of 200 kHz. If 8 speech channels are supported on a single radio channel, how many simultaneous users can be accommodated?
  • 25
  • 200
  • 1600
  • 1000
Answer: 1000
Q6 | US digital cellular system based on CDMA was standardized as                  
  • is-54
  • is-136
  • is-95
  • is-76
Answer: is-95
Q7 | Which of the following technique used in CDMA
  • qam
  • gmsk
  • ds-ss bpsk
  • fh-ss fsk
Answer: ds-ss bpsk
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