Performance of LDPC codes in direction-detection optical PPM channels

Shu Ming Tseng*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review


We study the performance of low-density parity check (LDPC) codes in Poisson optical channels with pulse-position modulation (PPM). We modify the iterative decoding algorithm used for binary phase-shift keying (BPSK) modulation in AWGN channels. The simulation results show that the PPM system outperforms the on-off keying (OOK) system. The performance of the LDPC-coded PPM system with imperfect synchronization is also shown.

Original languageEnglish
Pages (from-to)282-284
Number of pages3
JournalJournal of Optical Communications
Issue number4
StatePublished - 2007
Externally publishedYes


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