Decreasing the data rate is called as

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Question:
Decreasing the data rate is called as

1.Aliasing

2.Down sampling

3.Up sampling

4.None of the mentioned

Posted Date:-2022-05-21 00:01:48

More MCQS Questions and answers

  1. White noise has _______ power spectral density.
  2. A nyquist pulse is the one which can be represented by _____ shaped pulse multiplied by another time function.
  3. A to D conversion process uses
  4. Auto-correlation function is a
  5. Channels display multi-path due to
  6. Decreasing the data rate is called as
  7. Delay element in delta modulation acts as
  8. Different cases of sampling include
  9. For both PPM and PDM _______ is kept constant.
  10. From digital filter we will get the output pulse as the _______ of the current and the previous pulse.
  11. If each pulse of the sequence to be detected is in _____ shape, the pulse can be detected without ISI.
  12. In duobinary signalling method, for M-ary transmission, the number of output obtained is
  13. In M-ary PPM waveform, modulation is effected by
  14. In polybinary signalling method the present bit of binary sequence is algebraically added with ______ number of previous bits.
  15. In precoding technique, the binary sequence is _____ with the previous precoded bit.
  16. In which mixing is easier?
  17. Non uniform quantization includes
  18. Original signal came to be retraced from sampled version using
  19. Reconstruction filter is difficult to implement in hardware.
  20. Shot noise occurs in
  21. Some of the M-ary waveforms are
  22. Source coding reduces
  23. Source encoding procedure does
  24. The average noise power of white noise is
  25. The causes for error performance degradation in communication systems are
  26. The channel may be affected by
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  29. The filter which is used to recover the pulse with less ISI is called as
  30. The method in which small amount of controlled ISI is introduced into the data stream rather than trying to eliminate it completely is called as
  31. The method in which the tail of one pulse smears into adjacent symbol interval is called as
  32. The method using which the error propagation in dubinary signalling can be avoided is
  33. The method which has greater bandwidth efficiency is called as
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  36. The sample from the demodulation process consists of sample which is _______ to energy of the received symbol and _____ to noise.
  37. The signal can be reconstructed
  38. The term heterodyning refers to
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  40. To avoid aliasing
  41. Transmitted pulse becomes distorted due to
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  44. Which are called as hard decisions?
  45. Which device is needed for the reconstruction of signal?
  46. Which filter does not have sharp output?
  47. Which method should be implemented for reducing bandwidth?
  48. Which process requires low pass filter?
  49. Which requires interpolation filtering?
  50. Which signals are function of time?
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