Wavelet packet transform-based OFDM for optical communications
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2010-12-27
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Journal of Lightwave Technology
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Melbourne Authors
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Electrical and Electronic Engineering
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Journal Article
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Li, A., Shieh, W. & Tucker, R. S. (2010). Wavelet packet transform-based OFDM for optical communications. Journal of Lightwave Technology, 28 (24), pp.3519-3528. https://doi.org/10.1109/JLT.2010.2089673.
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Abstract
Wavelet packet transform-based optical OFDM (WPT-OFDM) systems can be used as an alternative approach to the conventional optical OFDM systems. In this paper, we investigate the performance and limitation of real WPT-OFDM systems. Its double-sideband characteristic makes it sensitive to spectrally non-symmetric dispersion such as polarization-mode dispersion (PMD). Simulations of dual-polarization WPT-OFDM transmission are carried out in the presence of PMD, and compared with conventional Fourier transform-based optical OFDM (FT-OFDM). The results show that WPT-OFDM is very sensitive to PMD, incurring 1-dB penalty at 5–11 ps DGD for 112-Gb/s dual-polarization transmission. PAPR and nonlinearity performance of WPT-OFDM are also analyzed in this work. We show that the Haar wavelet has 0.9-dB improvement in nonlinear launch power limit compared with FT-OFDM in a conventional transmission dispersion configuration where inline dispersion is fully compensated by a dispersion-compensation-fiber (DCF).
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Communications Technologies