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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6336–6350

LDPC coded OFDM over the atmospheric turbulence channel

Ivan B. Djordjevic, Bane Vasic, and Mark A. Neifeld  »View Author Affiliations


Optics Express, Vol. 15, Issue 10, pp. 6336-6350 (2007)
http://dx.doi.org/10.1364/OE.15.006336


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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).

© 2007 Optical Society of America

OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(060.4080) Fiber optics and optical communications : Modulation
(060.4230) Fiber optics and optical communications : Multiplexing
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Atmospheric and ocean optics

History
Original Manuscript: February 7, 2007
Revised Manuscript: April 30, 2007
Manuscript Accepted: April 30, 2007
Published: May 8, 2007

Citation
Ivan B. Djordjevic, Bane Vasic, and Mark A. Neifeld, "LDPC coded OFDM over the atmospheric turbulence channel," Opt. Express 15, 6336-6350 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-10-6336


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