Eb/N0 Ofdm

Hello

I’m simulating an OFDM scheme with channel coding and digital modulation
(16
QAM).
I would like to calculate BER values with an “Error Rate” block while I
vary
the amplitude of the noise voltage, using for this, a slider to vary the
Eb/N0.

My question is: What expression (or equation) should I use on the noise
voltage so it depends on the Eb/N0?

Than you.
Marbellys


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