Modulation Error Ratio

NI-RFmx Demod 2.4 Help

Edition Date: November 2017

Part Number: 374641H-01

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Modulation Error Ration (MER) is a measure of the signal-to-noise ratio (SNR) in a digitally-modulated signal. MER is usually expressed in dB. MER over N symbols is defined as follows:

where In+jQn is the vector representing the symbol being measured at index n
is the ideal vector close to the actual symbol being measured
N is the number of symbols

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