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Optimized Dispersion Compensation Using Orthogonal Frequency-Division Multiplexing
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DOI：10.1109/JLT.2008.925051.png)
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Abstract
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Orthogonal frequency-division multiplexing (OFDM) can compensate for linear distortions, such as group-velocity dispersion (GVD) and polarization-mode dispersion (PMD), provided the cyclic prefix is sufficiently long. Topically, GVD is dominant, as it requires a longer cyclic prefix. Assuming coherent detection, we show how to analytically compute the minimum number of subcarriers and cyclic prefix length required to achieve a specified power penalty, trading off power penalties from the cyclic prefix and from residual inter-symbol interference (ISI) and inter-carrier interference (ICI). We derive an analytical expression for the power penalty from residual ISI and ICI.
Keywords:
Coherent optical communications
communications system performance
group-velocity dispersion
multi-carrier optical systems
orthogonal frequency-division multiplexing
polarization-mode dispersion
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IF:
4.8
Papers:
1.7W
Citations:
3.8W
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