Although noise levels in a digital system can be expressed using SNR, it is more common to use E b / N o, the energy per bit per noise power spectral density.
22.
The mechanism of lowered noise floor is as previously discussed, that is, quantization noise power has not been reduced, but the noise spectrum has been spread over 16?the audio bandwidth.
23.
The noise generated at the resistor can transfer to the remaining circuit; the maximum noise power transfer happens with impedance matching when the Th�venin equivalent resistance of the remaining circuit is equal to the noise generating resistance.
24.
If the bandwidth in which the information signal is measured turns out not to be 1 Hz wide, then the term 10 log 10 ( bandwidth ) allows for the additional noise power present in the wider detection bandwidth.
25.
For a source of 25 k?, the noise generated by tube and source are the same, so the total noise power at the output of the amplifier is twice the noise power at the output of the perfect amplifier.
26.
For a source of 25 k?, the noise generated by tube and source are the same, so the total noise power at the output of the amplifier is twice the noise power at the output of the perfect amplifier.
27.
If one can aim many chips at exactly the same object and combine their output signals ( with no coding like JPEG in between ) then the noise power can theoretically be halved with every doubling of the number of cameras.
28.
The 0.4V noise margins are adequate because of the low output impedance of the driver stage, that is, a large amount of noise power superimposed on the output is needed to drive an input into an undefined region.
29.
The noise factor is defined as the ratio of the output noise power of a device to the portion thereof attributable to thermal noise in the input termination at standard noise temperature " T " 0 ( usually 290 K ).
30.
:In this low-SNR approximation, capacity is independent of bandwidth if the noise is white, of spectral density N _ 0 watts per hertz, in which case the total noise power is B \ cdot N _ 0.
