Which system uses QAM?

  1. Home

Question:
Which system uses QAM?

1.Digital microwave relay

2.Dial up modem

3.Digital microwave relay & Dial up modem

4.None of the mentioned

Posted Date:-2022-05-22 09:49:46

More MCQS Questions and answers

  1. A cycle slip occurs when the magnitude of the original phase error exceeds
  2. Acquisition is a ______ operation.
  3. As the synchronization levels increases, cost
  4. Average energy per bit is given by
  5. Coherent modulation requires ____ level of synchronization.
  6. Continuous phase modulation has
  7. CPM has
  8. Entropy calculation returns
  9. Entropy of N random variables is the _____ of the entropy of individual random variable.
  10. Every frequency has ____ orthogonal functions.
  11. For block codes _____ is necessary.
  12. FSK reception is
  13. FSK reception uses
  14. Gaussian noise has _____ power spread _____ over all frequencies.
  15. If we correlate the received signal with any one of the two orthogonal function, the obtained inner product will be
  16. If we correlate the received signal with both orthogonal function the inner product will be
  17. In non coherent reception _____ is measured.
  18. In open loop method, the time reference error __________ with respect to time.
  19. In phase lock which parameter is synchronized
  20. In VCO the output frequency is a linear function of its input
  21. In which modulation schemes, the spreading of spectrum occurs?
  22. Jamming is caused by
  23. Matched filter is a _____ technique.
  24. Non coherent system requires
  25. Phase locked loops consists of
  26. PLL designs have
  27. QAM uses ______ as the dimensions.
  28. Simulation is used to determine
  29. Spread spectrum signals are used for
  30. Synchronization is used in system which has
  31. The number of filters in CPM receiver structure is
  32. The radio meter consists of
  33. The synchronization necessary for BPSK is
  34. The system which has ______ signal to noise ratio can tolerate larger timing error.
  35. To avoid the loop to be driven to lock, the sweep rate should be
  36. Transmitter synchronization implies
  37. Uncertainty in the delay measurement is _________ to the bandwidth of signal pulse.
  38. What is the function of the edge detector?
  39. When a terminal is able to utilize the measurements made on the return link it is called as
  40. When phase noise and phase jitter is doubled, the phase variance increases by
  41. Which FSK has no phase discontinuity?
  42. Which is called as on-off keying?
  43. Which method has fast acquisition and can work without return link?
  44. Which method has two way link?
  45. Which method is more accurate?
  46. Which method needs precorrect time?
  47. Which method requires external authority and is inflexible?
  48. Which reduces the effective distance between signals in signal space?
  49. Which system makes the detection difficult for all users other than the intended users?
  50. Which system uses QAM?
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!