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. Signal processing is the processing, amplification and interpretation of signals. ... Signal-to-noise ratio (often abbreviated SNR or S/N) is meaningful both in the context of information theory and, informally, for Usenet or other newsgroup-like services. ...