半导体光电, 2015, 36 (1): 97, 网络出版: 2015-06-25  

OFDM-PON系统的非线性损伤补偿方法

Compensation Method for Nonlinear Distortions in OFDM-PON Systems
作者单位
上海大学 通信与信息工程学院 特种光纤与光接入网重点实验室, 上海 200444
摘要
围绕正交频分复用-无源光网络(OFDM-PON)系统中非线性损伤的补偿问题开展研究。使用VOLTERRA模型对非线性补偿器进行辨识, 利用差异因子并结合QR分解, 推导出修正向量的解析表达式, 提出模型核向量的自适应修正方法, 形成正交频分复用-无源光网络系统中非线性损伤的补偿算法。仿真结果表明, 所提出的方法可使系统误比特率提升1%~3%, 在系统比特率为130Gb/s时, 系统误比特率可保持在1%左右。
Abstract
The Nonlinear disturbance issues were considered for orthogonal frequency division multiplexing-passive optical networks (OFDM-PON) systems. A model with VOLTERRA series was used for identifying the nonlinear compensator. By using the difference factor and QR decomposition, adaptive method for the kernel vector was deduced. As a result, the nonlinear compensation algorithm for OFDM-PON systems was proposed. Simulation results show that the proposed scheme can improve the system BER performance by 1%~3%, and when the system bit rate is 130Gb/s, the system BER can maintain at about 1%.
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孙彦赞, 路振龙, 方勇, 王军华. OFDM-PON系统的非线性损伤补偿方法[J]. 半导体光电, 2015, 36(1): 97. SUN Yanzan, LU Zhenlong, FANG Yong, WANG Junhua. Compensation Method for Nonlinear Distortions in OFDM-PON Systems[J]. Semiconductor Optoelectronics, 2015, 36(1): 97.

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