Editing Channel capacity (section)

==Example application==

An application of the channel capacity concept to an [[additive white Gaussian noise]] (AWGN) channel with ''B'' Hz [[Bandwidth (signal processing)|bandwidth]] and [[signal-to-noise ratio]] ''S/N'' is the [[Shannon–Hartley theorem]]:
:<math> C = B \log_2 \left( 1+\frac{S}{N} \right)\ </math>

''C'' is measured in [[bits per second]] if the [[logarithm]] is taken in base 2, or [[Nat (unit)|nat]]s per second if the [[natural logarithm]] is used, assuming ''B'' is in [[hertz]]; the signal and noise powers ''S'' and ''N'' are expressed in a linear [[Power (physics)#Units|power unit]] (like watts or volts<sup>2</sup>). Since ''S/N'' figures are often cited in [[decibel|dB]], a conversion may be needed. For example, a signal-to-noise ratio of 30&nbsp;dB corresponds to a linear power ratio of <math> 10^{30/10} = 10^3 = 1000</math>.