4-PAM

AcronymDefinition
4-PAMFour-Level Pulse Amplitude Modulation (telecommunications)
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Figure 3 shows the secrecy dimming capacity of 4-PAM versus SNR values with different target dimming level.
Figure 4 shows the secrecy dimming capacity of 4-PAM versus target dimming ratio.
Thus, the maximum data rates achieved by the DFFE for 2-PAM and 4-PAM are 10 and ~20 Gb/s (since L [much greater than] 1 and [T.sub.mux] < [T.sub.add], note that [T.sub.DFFE] is dominated by the term [LT.sub.add].