MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless & Mobile Communications Questions & Answers Spread Spectrum Multiple Access knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
____________ arises from the fact that the spreading sequences of different users are not orthogonal. |
| A. | Near-far problem |
| B. | Line of sight |
| C. | Windowing |
| D. | Self jamming |
| Answer» E. | |
| 2. |
____________ is used to improve reception by collecting time delayed versions of the required signal. |
| A. | RAKE receiver |
| B. | Equalizer |
| C. | Frequency modulator |
| D. | High pass filter |
| Answer» B. Equalizer | |
| 3. |
In CDMA, symbol duration is ___________ than channel delay spread. |
| A. | Equal |
| B. | Greater |
| C. | Slightly greater |
| D. | Much less |
| Answer» E. | |
| 4. |
___________ problem occurs when many mobile users share the same channel. |
| A. | Near-far |
| B. | Activation |
| C. | Line of sight |
| D. | Windowing |
| Answer» B. Activation | |
| 5. |
All users in CDMA system uses __________ carrier frequency. |
| A. | Different |
| B. | Two |
| C. | Ten |
| D. | Same |
| Answer» E. | |
| 6. |
A frequency hopped system does not provide security. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
If the rate of change of the carrier frequency is greater than the symbol rate, then the system is referred as ___________ |
| A. | Fast frequency hopping system |
| B. | Slow frequency hopping system |
| C. | Time division frequency hopping system |
| D. | Code division multiple access system |
| Answer» B. Slow frequency hopping system | |
| 8. |
___________ is a digital multiple access system in which carrier frequencies are varied in pseudorandom order. |
| A. | CDMA |
| B. | FCDMA |
| C. | FHMA |
| D. | SDMA |
| Answer» D. SDMA | |
| 9. |
SSMA is bandwidth efficient when used with a single user. |
| A. | True |
| B. | False |
| Answer» C. | |