摘要
提出一种基于时变窄带滤波的光通信失真补偿技术。首先构建了光通信信道模型,进行LED光通信的信道均衡设计,经过IFFT之后得到的光强度调制/解调的直接检测输出,采用时变窄带滤波技术实现对光通信的信道失真补偿和码间干扰抑制。系统实验结果表明,采用该技术进行光通信设计,具有较好的信道失真补偿和码间干扰抑制能力,降低了通信的误比特率,最大程度降低限幅噪声和码间干扰,提高通信质量。
A distortion compensation technique for optical communication based on time varying narrowband filter is proposed.Firstly,the optical communication channel model is constructed,and the channelequalization of LED optical communication is designed.The direct detection output of the opticalintensity modulation/demodulation is obtained by IFFT,and the channel distortion compensation andinter symbol interference suppression are realized by using the time varying narrow band filteringalgorithm.Simulation results show that the proposed algorithm has better channel distortioncompensation and inter symbol interference suppression capability,which can reduce the bit error rateand reduce the noise and inter symbol interference.
作者
易志琴
余光华
Yi Zhiqin;Yu Guanghua(Financial Department,Lingnan Normal University,Zhanjiang 524000,China;South of the Five Ridges Teachers College Network and Information Center,Lingnan Normal University,Zhanjiang 524000,China)
出处
《科技通报》
北大核心
2017年第9期176-179,共4页
Bulletin of Science and Technology
关键词
信道
码间干扰
滤波抑制
光通信
channel
inter symbol interference
filtering suppression
optical communication
