Cognitive Radio Mock Test 1

10%

Question 1 of 10

1. Cellular systems employ ____ sectorization.

three way

two way

eight way

four way

Question 1 of 10

Question 2 of 10

2. ______ has many single- purpose radios in one structure.

SPEAKeasy - 2

Modular multifunctional information transfer system (MMITS)

Integrated communications, navigation, and identification architecture (ICNIA)

Cluster HMS

Question 2 of 10

Question 3 of 10

3. Which method is used to estimate time-difference of arrival and angle of arrival?

Frequency scanning interferometry

Phase interferometry

Interferometric dynamic measurement

Optical interferometry

Question 3 of 10

Question 4 of 10

4. RF amplifiers tend to be ____ amplifiers.

class AB

class A

class B

class C

Question 4 of 10

Question 5 of 10

5. ____ fixes the input power dynamic range such that there are no sinusoidal RF conversion artifacts in the output.

Two tone intermodulation product

SFDR

Noise Figure

Harmonics

Question 5 of 10

Question 6 of 10

6. Which of the following applications takes only SFDR as its performance metric?

Spread spectrum access

Spectrum analysis

Wideband digital receiver

Cellular Phone

Question 6 of 10

Question 7 of 10

7. In non-monotonic filters, attenuation increases with frequency.

True

False

Question 7 of 10

Question 8 of 10

8. Electronically Programmable Analog Components are also called as ____

Gate Array ASIC

Cell based ASIC

FPGA

FPAA

Question 8 of 10

Question 9 of 10

9. Doppler spread is given by _______

carrier frequency times the ratio of maximum velocity of a transmitter divided by propagation velocity

carrier frequency times the ratio of propagation velocity divided by minimum velocity of a transmitter

carrier frequency times the ratio of minimum velocity of a transmitter divided by propagation velocity

carrier frequency times the ratio of propagation velocity divided by maximum velocity of a transmitter

Question 9 of 10

Question 10 of 10

10. The shape factor of an anti-aliasing filter is given by the ratio of the frequency at ___ dB attenuation point to the frequency at ___ dB point.

80, 3

3, 80

-3, -80

-80, -3

Question 10 of 10