A distinction is that interfering radio transmitters contributing to " I " may be controlled by radio resource management, while " N " involves noise power from other sources, typically additive white gaussian noise ( AWGN ).
32.
If the Clutter Return Power is greater than the System Noise Power then the Radar is clutter limited and the Signal to Clutter Ratio must be equal to or greater than the Minimum Signal to Noise Ratio for the target to be detectable.
33.
Caution : Sometimes, the noise power is denoted by N _ 0 / 2 when negative frequencies and complex-valued equivalent baseband signals are considered rather than passband signals, and in that case, there will be a 3 dB difference.
34.
If the system temperature and bandwidth is 290 K and 1 Hz, then the effective noise power available in 1 Hz bandwidth from a source is " 174 dBm ( 174 dB below the one milliwatt level taken as a reference ).
35.
For a source of 25 k?, the noise generated by valve and source are the same, so the total noise power at the output of the amplifier is the square root of two times the noise power at the output of the perfect amplifier.
36.
For a source of 25 k?, the noise generated by valve and source are the same, so the total noise power at the output of the amplifier is the square root of two times the noise power at the output of the perfect amplifier.
37.
Phase noise ( ! ( " f " ) ) is typically expressed in units of dBc / Hz, and it represents the noise power relative to the carrier contained in a 1 Hz bandwidth centered at a certain offsets from the carrier.
38.
The noise figure is defined as the ratio of the noise power at the output of the amplifier relative to the noise power that would be present at the output if the amplifier were noiseless ( due to amplification of thermal noise of the signal source ).
39.
The noise figure is defined as the ratio of the noise power at the output of the amplifier relative to the noise power that would be present at the output if the amplifier were noiseless ( due to amplification of thermal noise of the signal source ).
40.
Where \ mathbf { R } _ v is the visibilities covariance matrix ( sources ), \ sigma _ s ^ 2 is the power of the interferer, and \ sigma _ n ^ 2 is the noise power, and \ dagger denotes the Hermitian transpose.
