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Table 2 Bandwidth and BER performance of OOK and PPM variants

From: A review of communication-oriented optical wireless systems

Modulation format Data rate BER
ASK R b = B ·log2M 2 M - 1 M log 2 M Q 1 M - 1 S N R log 2 M
PPM R b = B log 2 M M M 2 Q S N R M log 2 M 2
DPPM R b ¯ = 2 B log 2 M M + 1 Variable symbol duration, refer to [31] for a detailed presentation
DPIM R b ¯ =2B log 2 M M + 3 Variable symbol duration, refer to [32] for a detailed presentation
  1. Bandwidth B is the first-null bandwidth, SNR is the electrical signal-to-noise ratio and M is the number of chips that construct a symbol in PPM or the number of power levels in an ASK system. Function Q(x) is defined asQ x = 1 2 π x e - u 2 2 du.