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Carrier-To-Interference Ratio(CIR or SIR)

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mariach

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Hello,
I want to calculate Carrier-To-Interference Ratio of a signal in Matlab.

I found a code that calculates it but i do not know how to find the "total power" of the equation below.
InterferePower = TotalPower - NoisePower - SignalPower;

%Calculate the Carrier-To-Interference Ratio in dB as follows:
CIR = 10*log10(SignalPower/InterferePower);

Have you any idea?
 

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