LDPC coded OFDM over the atmospheric turbulence channel

Ivan B. Djordjevic; Bane Vasic; Mark A. Neifeld

doi:10.1364/OE.15.006336

LDPC coded OFDM over the atmospheric turbulence channel

Ivan B. Djordjevic, Bane Vasic, Mark A. Neifeld

Research output: Contribution to journal › Article › peer-review

95 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 language	English (US)
Pages (from-to)	6336-6350
Number of pages	15
Journal	Optics Express
Volume	15
Issue number	10
DOIs	https://doi.org/10.1364/OE.15.006336
State	Published - May 14 2007

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.15.006336

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AU - Vasic, Bane

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N2 - 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).

AB - 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).

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LDPC coded OFDM over the atmospheric turbulence channel

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