True white noise can never exist in a physical system. The noise bandwidth of a

Question

True white noise can never exist in a physical system. The noise bandwidth of a simple RC filter is equal to its cutoff frequency. The noise figure of an amplifier usually depends on the source resistance driving the amplifier Alias distortion results from a non-flat passband shape in the reconstruction filter. Pulses can exist that arc both band-limited and ISl-free. A matched filter is designed to match the PSD of the incoming noise. Delta modulation is a form of PAM in which the pulse shapes are triangular. Any cumulative distribution function (CDF) is monotone increasing. A random message sent in Manchester code (biphase format) passes higher frequencies through the channel than the same message sent in bipolar NRZ format. If the ensemble mean of a random process is constant over time, the process can be considered ergodic.

Explanation / Answer

1. True

The True white noise can never exist in the physical systems it is only mathematical approach

2. False

noise bandwidth = (pi)/(2*cutt off frequeny)

3. True

The noise figure depends on the noise power and the noise power depends on the source resistance of the driving amplifier. So source resistance depends on the noise figure of the amplifier.

4. True

Due to aliasing effect the not reconstructed the signal correctly

5. False

6. True

7. False

The puses shapes also the square type

8. True

CDF is the cumulative addition of PDF

9. True

10. True

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