MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless & Mobile Communications Questions & Answers Digital Modulation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Half power bandwidth is also called ______ |
| A. | Absolute bandwidth |
| B. | Null to null bandwidth |
| C. | 3 dB bandwidth |
| D. | Zero dB bandwidth |
| Answer» D. Zero dB bandwidth | |
| 2. |
_______ is equal to width of main spectral lobe. |
| A. | Null to null bandwidth |
| B. | Half power bandwidth |
| C. | 3 dB bandwidth |
| D. | Absolute bandwidth |
| Answer» B. Half power bandwidth | |
| 3. |
In digital communication system, in order to increase noise immunity, it is necessary to increase _________ |
| A. | Signal power |
| B. | Signal amplitude |
| C. | Signal frequency |
| D. | Signal magnitude |
| Answer» B. Signal amplitude | |
| 4. |
The performance of modulation scheme is not measured in terms of __________ |
| A. | Power efficiency |
| B. | Bandwidth efficiency |
| C. | Cost and complexity |
| D. | Transmitted power |
| Answer» E. | |
| 5. |
A desirable modulation scheme provides _________ bit error rates at __________ received signal to noise ratios. |
| A. | Low, low |
| B. | Low, high |
| C. | High, high |
| D. | High, low |
| Answer» B. Low, high | |
| 6. |
Modern mobile communication systems use analog modulation techniques. |
| A. | True |
| B. | False |
| Answer» C. | |