LDPC coded OFDM over the atmospheric turbulence channel

被引：66

作者：

Djordjevic, Ivan B. ^{[1
]}

Vasic, Bane ^{[1
]}

Neifeld, Mark A. ^{[1
]}

机构：

[1] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 10期

关键词：

D O I：

10.1364/OE.15.006336

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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). (C) 2007 Optical Society of America.

引用

页码：6336 / 6350

页数：15

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