近距离LED光通信直视信道模型研究  

Research on Line-of-sight Channel Model of Short-range LED Optical Communication

作　　者：赵太飞[1,2] 马壮 李星善 梁浩 ZHAO Tai-fei;MA Zhuang;LI Xing-shan;LIANG Hao(Faculty of Automation and Information Engineering,Xi′an University of Technology,Xi′an 710072,China;Shaanxi Civil-military Integration Key Laboratory of Intelligence Collaborative Networks,Xi′an710000,China;System Research Institute of Hubei′s Space Technology Academe,Wuhan 430040,China)

机构地区：[1]西安理工大学自动化与信息工程学院,西安710072 [2]陕西省智能协同网络军民共建重点实验室,西安710000 [3]湖北航天技术研究院总体设计所,武汉430040

出　　处：《光子学报》2020年第1期34-44,共11页Acta Photonica Sinica

基　　金：国家自然科学基金（No.61971345）;国家自然科学基金-中国民航局民航联合研究基金（No.U1433110）;陕西省重点产业链创新计划项目（No.2017ZDCXL-GY-06-01）;陕西省教育厅科研计划项目（No.17-JF024）;西安市碑林区科技计划项目（No.GX1921）;西安市科学计划项目（No.CXY1835(4))~~

摘　　要：利用高斯拟合函数确定了小发散角LED的类高斯发光模式,并根据光辐射特性和发光模式建立了LED直视信道模型.实际测量了服从朗伯、类高斯发光模式的多种多波段LED的接收光功率与信道参数的关系.实验结果表明,接收光功率的实测值与信道直流增益计算的理论值的平均相对误差小于±6%,该结果验证了本文提出的直视信道模型的正确性.Gauss fitting function is used to determine the Gauss-like radiation pattern of LED with small divergence angle,and the line-of-sight channel model of LED is established according to the optical radiation characteristics and radiation pattern.The relationship between the received optical power and the channel parameters of various multi-band LEDs obeying the Lambertian and Gauss-like modes is actually measured.The experimental results show that the average relative error between the measured value of received optical power and the theoretical value of channel DC gain calculation is less than±6%,which verifies the versatility and correctness of the line-of-sight channel model proposed in this paper.

关 键 词：光通信 信道模型 发光模式 小发散角 直流增益 

分 类 号：TN929.12[电子电信—通信与信息系统]