RCLED Optimization and Nonlinearity Compensation in a Polymer Optical Fiber DMT System
RCLED Optimization and Nonlinearity Compensation in a Polymer Optical Fiber DMT System
复制标题
聚合物光纤 DMT 系统中的 RCLED 优化和非线性补偿
DOI：
10.3390/app6090260
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发表时间：
2016-09
影响因子：
2.7
通讯作者：
Wang, Xianbo
中科院分区：
文献类型：
--
作者：
Miao, Pu;Wu, Lenan;Chen, Peng;Wang, Xianbo
In polymer optical fiber (POF) systems, the nonlinear transfer function of the resonant cavity light emitting diode (RCLED) drastically degrades the communication performance. After investigating the characteristics of the RCLED nonlinear behavior, an improved digital look-up-table (LUT) pre-distorter, based on an adaptive iterative algorithm, is proposed. Additionally, the system parameters, including the bias current, the average electrical power, the LUT size and the step factor are also jointly optimized to achieve a trade-off between the system linearity, reliability and the computational complexity. With the proposed methodology, both the operating point and efficiency of RCLED are enhanced. Moreover, in the practical 50 m POF communication system with the discrete multi-tone (DMT) modulation, the bit error rate performance is improved by over 12 dB when RCLED is operating in the nonlinear region. Therefore, the proposed pre-distorter can both resist the nonlinearity and improve the operating point of RCLED.
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