实用室内可见光通信连续干扰的消除  

Successive Interference Cancellation in Practical Indoor Interfered Visible Light Communication

作　　者：丁俊杰[1] 卞诗航 陈浩哲[1] 吴昊[1] 王震[1] 王颖[1] 游善红[1] 

机构地区：[1]苏州大学电子信息学院,江苏苏州215006

出　　处：《光通信研究》2017年第4期22-25,共4页Study on Optical Communications

基　　金：苏州大学大学生创新创业训练计划项目;光纤通信技术和网络国家重点实验室开放基金资助项目(2012OCTN-02&2015OCTN-02)

摘　　要：针对发光二极管之间的多径干扰,提出了采用QR分解的信道均衡算法消除干扰的方案。首先建立基于离散傅里叶变换扩频的正交频分复用技术的电力线与可见光融合通信系统,并考虑了由两个发光二极管之间的电线差所引发的多径干扰,然后比较了该系统下采用QR分解的信道均衡算法和传统信道均衡算法下的误码性能。结果表明,采用QR分解的信道均衡算法可消除由发光二极管之间的电线差引起的多径干扰,从而提高系统的传输性能。In terms of multipath interference induced by power line among Light Emitting Diodes （LED）, we introduce DFT-SOFDM with QR-CE to achieve successive interference cancellation. We first introduce a hybrid Power Line Communication（PLC） ~ Visible Light Communication （VLC） system based on Discrete Fourier Transform-Spread Orthogonal Frequency Di-vision Multiplexing （DFT-S OFDM）, considering the multipath interference induced by electrical lines between two LED.Then we compare the BER performance of QR decomposition based Channel Equalizer （QR-CE） with that of ConventionalChannel Equalizer （CCE） in this system. It is shown that DFT-S OFDM with QR-CE can achieve successive interference can-cellation in hybrid PLC VLC system with multipath interference among LED. The simulation result shows that the perform-ance of QR-CE is much better than that of CCE.

关 键 词：自由空间光通信 发光二极管 电力线通信 信道均衡 

分 类 号：TN929.1[电子电信—通信与信息系统]