MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The TCM decoder uses |
| A. | Minimum likelihood detector |
| B. | Maximum likelihood detector |
| C. | Does not use redundant bits |
| D. | None of the mentioned |
| Answer» C. Does not use redundant bits | |
| 2. |
Which determines the error performance in TCM? |
| A. | Reduced distance |
| B. | Free distance |
| C. | Bandwidth |
| D. | None of the mentioned |
| Answer» C. Bandwidth | |
| 3. |
Transmission bandwidth depends on |
| A. | Rate of signalling |
| B. | Density of signal points |
| C. | Reduced distance |
| D. | None of the mentioned |
| Answer» B. Density of signal points | |
| 4. |
WHICH_DETERMINES_THE_ERROR_PERFORMANCE_IN_TCM??$ |
| A. | Reduced distance |
| B. | Free distance |
| C. | Bandwidth |
| D. | None of the mentioned |
| Answer» C. Bandwidth | |
| 5. |
The_TCM_decoder_uses$ |
| A. | Minimum likelihood detector |
| B. | Maximum likelihood detector |
| C. | Does not use redundant bits |
| D. | None of the mentioned |
| Answer» C. Does not use redundant bits | |
| 6. |
Transmission bandwidth depends o? |
| A. | Rate of signalling |
| B. | Density of signal points |
| C. | Reduced distance |
| D. | None of the mentioned |
| Answer» B. Density of signal points | |
| 7. |
In TCM channel capacity can be increased. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Trellis coded modulation scheme |
| A. | Has memory |
| B. | Is memory-less |
| C. | Needs more bandwidth |
| D. | None of the mentioned |
| Answer» B. Is memory-less | |
| 9. |
In TCM the signals are decoded using |
| A. | Soft decision decoders |
| B. | Hard decision decoders |
| C. | Soft & Hard decision decoders |
| D. | None of the mentioned |
| Answer» B. Hard decision decoders | |
| 10. |
In finite state machines, output is predicted using |
| A. | Past output |
| B. | Present input |
| C. | Past output & Present input |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 11. |
Trellis coded modulation uses |
| A. | Non binary method |
| B. | Uses redundant bits |
| C. | No expansion of bandwidth |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Choosing a closely packed signal subset from any regular lattice or array of candidate points is called as |
| A. | Optimum signal constellation boundaries |
| B. | Higher density lattice structures |
| C. | Trellis coded modulation |
| D. | None of the mentioned |
| Answer» B. Higher density lattice structures | |
| 13. |
Adding improvement to the signal subset choice by starting with the densest possible lattice for the space is called as |
| A. | Optimum signal constellation boundaries |
| B. | Higher density lattice structures |
| C. | Trellis coded modulation |
| D. | None of the mentioned |
| Answer» C. Trellis coded modulation | |