LDPC coded OFDM over the atmospheric turbulence channel

Research output: Contribution to journalArticle

76 Scopus citations

Abstract

Low-density parity-check (LDPC) coded optical orthogonal frequency division multiplexing (OFDM) is shown to significantly outperform LDPC coded on-off keying (OOK) over the atmospheric turbulence channel in terms of both coding gain and spectral efficiency. In the regime of strong turbulence at a bit-error rate of 10-5, the coding gain improvement of the LDPC coded single-side band unclipped-OFDM system with 64 sub-carriers is larger than the coding gain of the LDPC coded OOK system by 20.2dB for quadrature-phase-shift keying (QPSK) and by 23.4dB for binary-phase-shift keying (BPSK).

Original languageEnglish (US)
Pages (from-to)6336-6350
Number of pages15
JournalOptics Express
Volume15
Issue number10
DOIs
StatePublished - May 14 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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