相位调制技术对可见光通信系统性能的影响研究  

Research on the influence of phase modulation technology on the performance of visible light communication system

作　　者：翟倩[1] 陆兴华[1] 孙野 ZHAI Qian;LU Xinghua;SUN Ye(Huali College,Guangdong University of Technology,Guangzhou 511325,China)

机构地区：[1]广东工业大学华立学院,广州511325

出　　处：《激光杂志》2020年第12期166-170,共5页Laser Journal

基　　金：广东省普通高校青年创新人才项目(自然科学)(No.2016KQNCX215)。

摘　　要：针对可见光通信系统中误码率较高的问题,提出基于相位调制技术的可见光通信系统。首先分析可见光通信系统的光源布局并构建优化模型,对LED功率因子优化,提升功率分布匀称度;然后使用白光作为信号发射源,利用光电检验器作为接收机,使用希尔伯特变换原理得到正交滤波器组的互激反映模式,构建出相位调制技术的可见光通信系统模型;最后运用已得的高斯信道误码率,经过调整信噪比数值,对其进行误码性能分析。仿真实验结果表明,与传统方法相比,本文方法能够减少系统传输误码率,保证用户及时获取信息,具备很强的应用价值。Aiming at the problem of high bit error rate in visible light communication system,a visible light communication system based on phase modulation technology is proposed.Firstly,the light source layout of the visible light communication system is analyzed and the optimization model is built to optimize the LED power factor and improve the power distribution uniformity.Secondly,the white light is used as the signal source,the photoelectric detector is used as the receiver and the Hilbert transform principle is used to get the mutual excitation reflection mode of the orthogonal wave filter group,and the visible light communication system model of the phase modulation technology is constructed.At last,the error rate of Gaussian channel is used to analyze the performance of error rate by adjusting the value of SNR.The simulation results show that compared with the traditional method,this method can reduce the transmission error rate of the system,ensure the user to obtain information in time,and has a strong application value.

关 键 词：相位调制技术 可见光通信系统 光源布局 误码率 

分 类 号：TN929[电子电信—通信与信息系统]