Frequency Division Multiple Access (FDMA) MCQ’s

Electronics & Communication Engineering Wireless & Mobile Communications

This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Division Multiple Access (FDMA)”.

1. During the period of call, other users can share the same channel in FDMA.
a) True
b) False

2. The FDMA channel carries ____________ phone circuit at a time.
a) Ten
b) Two
c) One
d) Several

3. Frequency division multiple access (FDMA) assigns ______ channels to _______ users.
a) Individual, individual
b) Many, individual
c) Individual, many
d) Many, many

4. If the FDMA channel is not in use, it can be used by other users.
a) True
b) False

5. The symbol time in FDMA systems is _________ thus intersymbol interference is ______
a) Large, high
b) Small, low
c) Small, high
d) Large, low

6. The bandwidth of FDMA channel is ______
a) Wide
b) Narrow
c) Large
d) Zero

7. Due to _________ transmission scheme __________ bits are needed for overhead in FDMA systems.
a) Continuous, few
b) Discontinuous, few
c) Continuous, many
d) Discontinuous, many

8. __________ is undesired RF radiation.
a) Intermodulation frequency
b) Intermediate frequency
c) Instantaneous frequency
d) Instrumental frequency

9. In US AMPS, 416 channels are allocated to various operators with 10 kHz guard band and channel between them is 30 kHz. What is the spectrum allocation given to each operator?
a) 12.5 kHz
b) 30 kHz
c) 12.5 MHz
d) 30 MHz

10. Which of the following is not true for FDMA systems as compared to TDMA systems?
a) Low complexity
b) Lower cell site system cost
c) Tight RF filtering
d) Narrow bandwidth

11. __________ is based on FDMA/FDD.
a) GSM
c) Cordless telephone

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