Figure 3
Bit error probability under different parameters. (a) Error function complement with a log-normal scale. (b–d) BEP for a geometric standard deviation of 20%, 10% and 5%, respectively, for 2, 3, 4 and 8 levels. Note that since \(\sigma ^*\) is a multiplicative factor, a value of \(X\%\) can be implicitly understood as \(1+X\) (e.g for \(\sigma ^* = 10\%\) we use \(\sigma ^* = 1.10\)).
