MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Software Defined Radio knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Cost of production electronics is an exponential function of parts count, number of antennas, and related RF/IF paths. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following is not a challenge posed by antenna? |
| A. | Multiband antenna |
| B. | RF MEMS |
| C. | Co-site interference |
| D. | Programmability |
| Answer» C. Co-site interference | |
| 3. |
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 |
| Answer» E. | |
| 4. |
Which of the following is not influenced by antenna characteristics? |
| A. | Gain |
| B. | Number of ADC s |
| C. | Number of DAC s |
| D. | Diversity |
| Answer» E. | |
| 5. |
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 |
| Answer» E. | |
| 6. |
The physical location of the antennas may cause _____ |
| A. | site interference |
| B. | co-site interference |
| C. | diversity interference |
| D. | diversity combining interference |
| Answer» C. diversity interference | |
| 7. |
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 |
| Answer» B. increasing DSP resources | |
| 8. |
______ combiner picks the diversity channel with maximum received signal strength. |
| A. | Baseband diversity |
| B. | Carrier diversity |
| C. | Digital diversity |
| D. | Analog diversity |
| Answer» E. | |
| 9. |
Which stage carries out diversity combining? |
| A. | RF access stage |
| B. | IF stage |
| C. | Bit stream processing stage |
| D. | Development |
| Answer» C. Bit stream processing stage | |
| 10. |
_____ offers fade resistance for slow-moving mobiles. |
| A. | FEC |
| B. | Diversity |
| C. | Frequency hopping |
| D. | Interleaving |
| Answer» D. Interleaving | |
| 11. |
Cellular systems employ ____ sectorization. |
| A. | two way |
| B. | four way |
| C. | eight way |
| D. | three way |
| Answer» E. | |
| 12. |
The rule of thumb for antenna diversity states that for an antenna separation of 10 wavelengths or more, there is a considerable probability for the diversity signal to be substantially decorrelated from the primary signal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Doppler spread is given by _______ |
| A. | carrier frequency times the ratio of maximum velocity of a transmitter divided by propagation velocity |
| B. | carrier frequency times the ratio of minimum velocity of a transmitter divided by propagation velocity |
| C. | carrier frequency times the ratio of propagation velocity divided by maximum velocity of a transmitter |
| D. | carrier frequency times the ratio of propagation velocity divided by minimum velocity of a transmitter |
| Answer» B. carrier frequency times the ratio of minimum velocity of a transmitter divided by propagation velocity | |
| 14. |
Which of the following can reduce the probability of non-recoverable fade depth? |
| A. | Diversity |
| B. | FEC |
| C. | Interleaving |
| D. | FEC and Interleaving |
| Answer» B. FEC | |
| 15. |
Which of the following option cannot be employed to overcome fading? |
| A. | Reduced channel symbol rates |
| B. | Diversity transmission and reception |
| C. | Decreased bandwidth |
| D. | Structured data |
| Answer» D. Structured data | |