Carrier-to-noise ratio

Eb/N0Ā is closely related to theĀ carrier-to-noise ratioĀ (CNR orĀ C/N), i.e. theĀ signal-to-noise ratioĀ (SNR) of the received signal, after the receiver filter but before detection:

where

fbĀ is the channel data rate (net bitrate), and
BĀ is the channel bandwidth

The equivalent expression in logarithmic form (dB):

Source:Ā  Wikipedia