MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless & Mobile Communications Questions & Answers Combined Linear and Constant Envelope Modulation Techniques knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In QAM, the amplitude is _______ and phase is _______ |
| A. | Varied, constant |
| B. | Varied, varied |
| C. | Constant, varied |
| D. | Constant, constant |
| Answer» C. Constant, varied | |
| 2. |
The power efficiency of the M ary PSK decreases because of the _____ |
| A. | Freely packed constellation |
| B. | Increment of bandwidth efficiency |
| C. | Fixed null bandwidth |
| D. | Densely packed constellation |
| Answer» E. | |
| 3. |
As the value of M _________ the bandwidth efficiency ________ |
| A. | Increases, same. |
| B. | Increases, decreases |
| C. | Increases, increases |
| D. | Decreases, same |
| Answer» D. Decreases, same | |
| 4. |
The constellation of M-ary PSK is ____________ dimensional. |
| A. | One |
| B. | Does not exist |
| C. | Two |
| D. | Three |
| Answer» D. Three | |
| 5. |
In M-ary PSK, the carrier ___________ takes one of M possible values. |
| A. | Amplitude |
| B. | Frequency |
| C. | Angle |
| D. | Phase |
| Answer» E. | |
| 6. |
The number of possible signal in M-ary signalling is given by M and M = __________ where n is an integer. |
| A. | n |
| B. | 2n |
| C. | 2<sup>n</sup> |
| D. | n<sup>2</sup> |
| Answer» D. n<sup>2</sup> | |