Software Defined Radio Architecture MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Software Defined Radio Architecture, 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 Software Defined Radio Architecture 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 Software Defined Radio Architecture mcq questions that explore various aspects of Software Defined Radio Architecture problems. Each MCQ is crafted to challenge your understanding of Software Defined Radio Architecture 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 Software Defined Radio Architecture MCQs are your pathway to success in mastering this essential Cognitive Radio topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Software Defined Radio Architecture. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Software Defined Radio Architecture MCQs | Page 2 of 13

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Q11.
____ technique exploits lack of coherence between desired signal and interference.

a.

Multibeam arrays

b.

Adaptive spatial nulling

c.

Beamforming

d.

Space-time adaptive processing

Discuss
Answer: (d).Space-time adaptive processing Explanation:Space-time adaptive processing technique exploits lack of coherence between desired signal and interference. It separated the signals in parameter space. It can be employed to reduce collinear interference.
Q12.
In_____, the highest-power signal is demodulated to estimate its bitstream.

a.

maximum likelihood

b.

sequential interference cancellation

c.

least mean square

d.

recursive least square

Discuss
Answer: (b).sequential interference cancellation Explanation:In sequential interference cancellation, the highest-power signal is demodulated to estimate its bitstream. By employing this technique, co-channel interference from strongest interferer can be reduced substantially.
Q13.
Decoded Channel Bits Interface is defined between ____ functional block and ____ functional block.

a.

antenna, RF/IF

b.

RF/IF, modem

c.

modem, INFOSEC

d.

INFOSEC, bitstream

Discuss
Answer: (c).modem, INFOSEC Explanation:The process of digital to analog conversion, filtering add noise to signals. To mitigate this condition, an interface is introduced between the smart antenna and the core base station. Decoded Channel Bits Interface is defined betweenmodem functional block and INFOSEC functional block.
Q14.
Multibeam antenna technology is more complex than null-forming.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False Explanation:Null forming is more complex than mutlibeam antenna technology. Multibeam antenna is used to enhance SNR. Null-forming is used to suppress interference in high density traffic.
Q15.
Maximum likelihood techniques formulate the likelihood ratio for a sequence of channel symbols.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Maximum likelihood techniques formulate the likelihood ratio for a sequence of channel symbols. The maximum likelihood ratio determines signal parameter estimate.
Q16.
Which of the following is not present in the source segment of a mobile unit?

a.

Narrowband ADCs

b.

Source encoder

c.

Source decoder

d.

Interface to the PSTN

Discuss
Answer: (d).Interface to the PSTN Explanation:Source segment of mobile unit differs from basestation. The mobile unit source segment comprises of source encoder, source decoder, narrowband ADCs, and narrowband DACs. The bases tation consists of interface to the public switched telephone network for access to remote source coding.
Q17.
____ is the process of non-linear compression and expansion of analog electronic signal.

a.

Quantization

b.

Companding

c.

Pulse code modulation

d.

Modulation

Discuss
Answer: (b).Companding Explanation:Companding is the process of non-linear compression and expansion of analog electronic signal. The dynamic range of the signal is compressed at the transmitter and is expanded to the normal range at the receiver. It helps in the preservation of information content.
Q18.
CELP stands for ____

a.

Codebook Evolved Linear Processing

b.

Codebook Excited Linear Prediction

c.

Cross-correlation Excited Linear Prediction

d.

Cross-correlation Evolved Linear Processing

Discuss
Answer: (b).Codebook Excited Linear Prediction Explanation:Codebook Excited Linear Prediction is a linear speech coding algorithm. It uses an adaptive and a fixed codebook as the input of the linear prediction model.
Q19.
____ software supports system control and user-interface functions.

a.

Voice processing

b.

Mode processing

c.

Message processing

d.

Network processing

Discuss
Answer: (c).Message processing Explanation:Message processing software supports system control and user-interface functions. It sets up the direction of the channel, its associated crypto algorithm, AGC loop bandwidth, and transmission and reception parameters.
Q20.
User interface software allows the ____ of ____ between a core system processor and an external head.

a.

direction, signal

b.

distribution, channel control

c.

distribution, signal

d.

direction, channel control

Discuss
Answer: (b).distribution, channel control Explanation:User interface software determines and controls status externally. User interface software allows the distribution of channel control between a core system processor and an external head. The core system processor implements user interface functions. The external head may request status and provide control parameters.
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