Technology Tradeoffs in Software Defined Radio MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Technology Tradeoffs in Software Defined Radio, a fundamental topic in the field of Cognitive Radio. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Technology Tradeoffs in Software Defined Radio MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Technology Tradeoffs in Software Defined Radio mcq questions that explore various aspects of Technology Tradeoffs in Software Defined Radio problems. Each MCQ is crafted to challenge your understanding of Technology Tradeoffs in Software Defined Radio principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Cognitive Radio tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Technology Tradeoffs in Software Defined Radio MCQs are your pathway to success in mastering this essential Cognitive Radio topic.

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Technology Tradeoffs in Software Defined Radio MCQs | Page 3 of 17

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Q21.
_____ offers fade resistance for slow-moving mobiles.

a.

FEC

b.

Diversity

c.

Frequency hopping

d.

Interleaving

Discuss
Answer: (c).Frequency hopping Explanation:Frequency hopping can provide fade resistance for slow-moving mobiles. GSM’s frequency hopping plan improves SNR by averaging deep fades.
Q22.
Which stage carries out diversity combining?

a.

RF access stage

b.

IF stage

c.

Bit stream processing stage

d.

Development

Discuss
Answer: (b).IF stage Explanation:Diversity combining is performed in the IF stage. Diversity antennas require parallel RF/IF converters and ADC channels.
Q23.
______ combiner picks the diversity channel with maximum received signal strength.

a.

Baseband diversity

b.

Carrier diversity

c.

Digital diversity

d.

Analog diversity

Discuss
Answer: (d).Analog diversity Explanation:Analog diversity combiner selects the diversity channel with maximum signal strength whereas digital diversity combiner uses time delay and addition of signal to yield signal of better strength and coherence.
Q24.
The increase in demand for DSP resources due to the introduction of diversity can be controlled by _______

a.

dynamically-pooled DSP resources

b.

increasing DSP resources

c.

fixing the number of users

d.

combining diversity with frequency hopping

Discuss
Answer: (a).dynamically-pooled DSP resources Explanation:All subscribers do not require diversity simultaneously. Dynamically pooled DSP resources can be used to enhance channels with low carrier to interference ratio.
Q25.
The physical location of the antennas may cause _____

a.

site interference

b.

co-site interference

c.

diversity interference

d.

diversity combining interference

Discuss
Answer: (b).co-site interference Explanation:The impact of physical location of the antennas on self-generated EMI is called as co-site interference.It occurs when two or more closely located RF systems affect each other negatively.
Q26.
Military applications resort to channelized architectures due to _____

a.

excess of bandwidth

b.

lack of bandwidth

c.

excessive programmability

d.

excess of bandwidth and programmability

Discuss
Answer: (d).excess of bandwidth and programmability Explanation:Military application resort to channelized architectures due to excess of bandwidth and programmability. The channelized architectures have dedicated antenna and RF conversion subsystem for each subbandof resonant antenna.
Q27.
Which of the following is not influenced by antenna characteristics?

a.

Gain

b.

Number of ADC’s

c.

Number of DAC’s

d.

Diversity

Discuss
Answer: (d).Diversity Explanation:Gain, number of antenna channels required to support multiband multimode operation, number of ADC’s and number of DAC’s are parameters influenced by antenna characteristics.
Q28.
Which of the following is not observed due to co-site interference?

a.

Eddy currents

b.

Near field effects

c.

Multicarrier active intermodulation

d.

Multicarrier passive intermodulation

Discuss
Answer: (d).Multicarrier passive intermodulation Explanation:Co-site interference may result in multimode, multiband antenna interaction, eddy currents, near field effects, electrical isolation and multicarrier active intermodulation.
Q29.
Which of the following is not a challenge posed by antenna?

a.

Multiband antenna

b.

RF MEMS

c.

Co-site interference

d.

Programmability

Discuss
Answer: (b).RF MEMS Explanation:RF MEMS can improve the performance of the antenna by introducing re-configurability. Multiband antenna, co-site interference, and programmability are challenges posed by antenna.
Q30.
Cost of production electronics is an exponential function of parts count, number of antennas, and related RF/IF paths.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False Explanation:Cost of production electronics is a linear function of parts count, number of antennas and related RF/IF paths.Antenna and RF system accounts for nearly 60% of the total cost of a radio node.
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