Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.21.020851
Title: Investigation of PMD in direct-detection optical OFDM with zero padding
Authors: Li, X.
Alphones, A.
Zhong, W.-D.
Yu, C. 
Issue Date: 9-Sep-2013
Source: Li, X.,Alphones, A.,Zhong, W.-D.,Yu, C. (2013-09-09). Investigation of PMD in direct-detection optical OFDM with zero padding. Optics Express 21 (18) : 20851-20856. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.21.020851
Abstract: We investigate the polarization-mode dispersion (PMD) effect of zero padding OFDM (ZP-OFDM) in direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM) systems. We first study the conventional equalization method for ZP-OFDM. Then an equalization method based on sorted QR decomposition is proposed to further improve the performance. It is found that the performance improvement of ZPOFDM is due to the frequency domain oversampling (FDO) induced intercarrier interference (ICI). Numerical simulation results show that compared with cyclic prefix OFDM (CP-OFDM), ZP-OFDM has a significantly higher tolerance to PMD in DDO-OFDM systems when the channel spectral nulls occur at certain differential group delay (DGD) values. ©2013 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/56401
ISSN: 10944087
DOI: 10.1364/OE.21.020851
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