Eb/No

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Eb/No (the Energy per bit per noise power spectral density) is a parameter used in signal processing and telecommunications similar to signal-to-noise ratio (SNR). It defines the SNR per bit and is an important measure to evaluate and compare different digital communication systems.

Eb/N0 simplifies comparisons of SNR required by the different modulation methods because it normalizes these methods according to their spectral efficiency.

Eb/N0 is closely related to carrier-to-noise ratio (CNR):

CNR=E_b/N_0\cdot\frac{f_b}{B}

or in logarithmic form (dB):

CNR=E_b/N_0+10log_{10}(\frac{f_b}{B})

Where

fb is the channel data rate
B is the channel bandwidth

[edit] External links

http://www.sss-mag.com/ebn0.html Eb/N0 Explained. An introductory article on Eb/N0

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