基于正交频分复用调制的可见光通信指纹匹配定位算法  

Fingerprint Matchingand Localization Algorithm Based on Orthogonal Frequency Division Multiplexing Modulation for Visible Light Communication

作　　者：徐世武[1,2] 吴怡 苏国栋[3] Xu Shiwu;Wu Yi;Su Guodong(Fujian Provincial Key Laboratory of Photonics Technology, Key Laboratory of Opto-Electronic Science and Technology for Medicine of the Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350007, China;Concord University College, Ftcjian Normal University, Fuzhou, Fujian 350117, China;Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan 40724, China)

机构地区：[1]福建师范大学医学光电科学与技术教育部重点实验室福建省光子技术重点实验室,福建福州350007 [2]福建师范大学协和学院,福建福州350117 [3]逢甲大学资讯工程学系,台湾台中40724

出　　处：《激光与光电子学进展》2019年第9期65-73,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61571128);福建省中青年教师教育科研项目(JAT160574,JAT170865,JZ170367);福建师范大学协和学院教育教学改革研究项目(JG20170106)

摘　　要：提出了一种基于正交频分复用(OFDM)调制的室内可见光通信指纹匹配定位算法(FMLA-OFDM)。实验表明,相比于传统的质心定位算法,所提算法平均定位精度提高了56%,定位稳定性提高了55%;随着LED水平间距的增大,所提算法定位精度明显优于基于最小二乘法模型的定位精度;相比于基于二进制启闭键控(OOK)调制方式的模型,所提算法的平均定位精度提高了17%,定位稳定性提高了21%。We proposed a fingerprint matching and localization algorithm based on orthogonal frequency division multiplexing(OFDM) modulation for indoor visible light communication known as FMLA-OFDM. The experimental results show that compared with the traditional centroid localization algorithm,the average positioning accuracy of the proposed algorithm and the positioning stability are improved by 56% and 55%,respectively.Further,with the increase of the horizontal distance between LEDs,the positioning accuracy of the proposed algorithm is obviously superior to that of the positioning model based on the least square method.Finally,the average positioning accuracy and the positioning stability of the proposed algorithm are 17% and 21% higher than those of the positioning model based on the binary on-off keying(OOK)modulation mode,respectively.

关 键 词：光通信 正交频分复用 接收光功率 指纹匹配 室内定位 

分 类 号：TN929.12[电子电信—通信与信息系统]