Experimental Demonstration of Direct-Detection Optical Fast-OFDM using Memory Polynomials
Experimental Demonstration of Direct-Detection Optical Fast-OFDM using Memory Polynomials
复制标题
DOI：
10.1109/latincom53176.2021.9647844
复制
发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
L. C. Vieira;I. Darwazeh;Shirin Hussein;Chin-Pang Liu;John B. Mitchell
中科院分区：
文献类型：
--
作者：
L. C. Vieira;I. Darwazeh;Shirin Hussein;Chin-Pang Liu;John B. Mitchell
Fast-OFDM以其实现简单、频谱效率高的优点在光接入网络中得到了广泛的应用。本文提出了一种新的快速ofdm光接入网络时域均衡方法，该方法解决了系统组件和光通道线性和非线性行为的影响。所提出的均衡技术简化了系统实现，并且当与为最小化最小二乘误差而设计的训练信号结合使用时显示出优异的效果，从而实现了信道均衡。本文详细介绍了该算法的设计方法，并在具有直接检测光链路和10公里单模光纤的实验测试台上实现了该算法。对7.5 Gbit/s 4PAM信号的传输实验结果表明，与传统系统实现相比，该均衡技术在误码率和传输功率方面具有优势。结果显示了各种系统实现和参数，并基于实时信号传输和脱机接收机处理。报告的结果是这种系统的首次演示。
Fast-OFDM has been used extensively in optical and wireless systems, with its advantages of simple implementation and spectral efficiency making it a good candidate for optical access networks. This work proposes a new time domain equalization method for Fast-OFDM optical access networks, which deals with ameliorating the effects of linear and nonlinear behavior of system components and optical channel. The proposed equalization technique simplifies system implementation and shows excellent results when used in conjunction with training signals designed for the purpose of minimization of least square error and hence equalization of the channel. The work reports details of the design approach and then implementation of the algorithm in an experimental test bed with an direct-detection optical link and a 10 km single mode fibre. Experimental results, obtained for transmission of 7.5 Gbit/s 4PAM signals, demonstrate error rate/transmission power advantages for the new equalization technique, relative to traditional system implementation. Results are shown for various system implementation and parameters and are based on real time signal transmission and off line receiver processing. The reported results are the first demonstration of such a system.