An ICI Reduction Based on PAPR Clipping in Coherent Optical OFDM System

2018 International Conference on Advanced Science and Engineering (ICOASE) Pub Date : 2018-10-01 DOI:10.1109/ICOASE.2018.8548855

L. A. AL-Hashemi, G. Al-Suhail, Sinan M. Abdul satar, A. N. Kareem, M. A. Hussein

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引用次数: 3

Abstract

The Inter-Carrier Interference (ICI) compensation for Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) system has been studied in this paper. The purpose behind is to investigate the presence of ICI due to the impact of Laser Phase Noise (LPN) and Fiber Non-Linearity (FNL). Thereby, we propose a simple clipping scheme which represents an effective distortion algorithm to decrease the Peak to Average Power Ratio (PAPR) for 4QAM system. The method exhibits a significant process on ICI cancellation in CO-OFDM system. The OFDM signal is basically transmitted along 550km distance rated at 10Gbps single mode fiber for the coherent optical mode. The new findings show that the receiver sensitivity is highly improved below 10−3 FEC for laser power 5dBm; and archives about 1dBm to 2.4dBm when laser power becomes 8dBm at a typical clipping ratio of 0.6. In particular, the system exhibits a good performance over a 385km transmission distance in comparison to the conventional CO-OFDM. As a result, the proposed clipping shows that the system can enhance its the performance by reducing ICI in the CO-OFDM system; in addition to present a high robustness in BER metric against FNL by a clear reduction in PAPR.

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相干光OFDM系统中基于PAPR裁剪的ICI降低

研究了相干光正交频分复用(CO-OFDM)系统的载波间干扰(ICI)补偿问题。目的是研究激光相位噪声(LPN)和光纤非线性(FNL)的影响下光纤耦合耦合的存在。因此，我们提出了一种简单的裁剪方案，它代表了一种有效的失真算法，以降低4QAM系统的峰值与平均功率比(PAPR)。在CO-OFDM系统中，该方法对ICI消除效果显著。OFDM信号基本上以10Gbps的单模光纤传输550公里的距离，用于相干光模式。新的研究结果表明，当激光功率为5dBm时，接收器灵敏度在10−3 FEC以下得到了很大的提高;当激光功率为8dBm时，在典型的削波比为0.6时，约为1dBm至2.4dBm。特别是，与传统的CO-OFDM相比，该系统在385公里的传输距离上表现出良好的性能。实验结果表明，该方法可以通过降低CO-OFDM系统中的ICI来提高系统的性能;此外，通过明显降低PAPR，在BER指标中对FNL具有高稳健性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 International Conference on Advanced Science and Engineering (ICOASE)

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