Abstract
Recently, Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) has been seen as a potential candidate for long haul optical transmission. It is due to OFDM technique that was proved as an effective solution for mitigating chromatic dispersion (CD) effects in optical communication systems. However, a very basic drawback of OFDM technique is large peak-to-average power ratio (PAPR) problem which requires large scale linear power amplifier and optical external modulator. The large PAPR leads to the increase of nonlinearity of optical fiber which depends on instantaneous signal power. So, the performance of CO-OFDM system is degraded. Several approaches were studied and applied in wireless communication. Among all techniques of Partial Transmit Sequence (PTS) is considered as the good method because of its distortionless characteristics. But the efficiency of this algorithm in long haul optical communication application is still an open issue. In this paper, we study PTS technique to reduce the influence of optics nonlinear effects. The Simulink simulation results are presented and discussed.
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Le Khoa, D., Tu, N.T., Thu, N.T.H., Phuong, N.H. (2014). Peak-to-Average Power Ratio Reduction in Long Haul Coherent Optical OFDM Systems. In: Zelinka, I., Duy, V., Cha, J. (eds) AETA 2013: Recent Advances in Electrical Engineering and Related Sciences. Lecture Notes in Electrical Engineering, vol 282. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41968-3_23
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DOI: https://doi.org/10.1007/978-3-642-41968-3_23
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