Below is the equation mentioned in the paper "Comparison of Asymmetrically Clipped Optical OFDM and DC-Biased Optical OFDM in AWGN "I am asking about the value of "k" and how to program it in Matlab code.

Bdc=sqrt (E{xt^2}) .. (3)

We define this as a bias of 10 log10(k^2 + 1) dB

Xdc=Bdc+xt

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