Excess Noise Ratio

Excess Noise Ratio (ENR) is a way of describing the Power Spectral Density (PSD) of noise with respect to the thermal noise floor.

The noise floor power density is defined as -174 [dBm/Hz].

ENR [dB] = PSD [dBm/Hz] - -174 [dBm/Hz]

For example: when my noise source has an ENR of 44 [dB] around a certain frequency, the PSD of the noise is 44 - 174 = -130 [dBm/Hz], or -70 [dBm/MHz].

单词	Excess Noise Ratio
释义	Excess Noise Ratio 英语百科 Excess Noise Ratio Excess Noise Ratio (ENR) is a way of describing the Power Spectral Density (PSD) of noise with respect to the thermal noise floor. The noise floor power density is defined as -174 [dBm/Hz]. ENR [dB] = PSD [dBm/Hz] - -174 [dBm/Hz] For example: when my noise source has an ENR of 44 [dB] around a certain frequency, the PSD of the noise is 44 - 174 = -130 [dBm/Hz], or -70 [dBm/MHz].
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