基于RSS算法的CDMA调制解调可见光定位系统

Visible light positioning system with CDMA modulation and demodulation based on RSS algorithm

针对室内可见光定位(VLP)实际应用的大面积面板灯排列场景中存在的定位精确度低、信号干扰严重等问题,提出了一种基于接收信号强度(RSS)算法的码分多址(CDMA)调制解调VLP系统,介绍了RSS算法和CDMA调制解调VLP系统原理,通过实验验证了系统定位精度。实验结果表明:在未考虑实时移动和延迟刷新等因素的情况下,固定点位的定位最大误差为0.3 m,算法解决了传统定位算法中边缘角落区域定位精度低的问题,提高了VLP系统的鲁棒性。

Aiming at the problems such as low positioning accuracy and serious signal interference in the large-area panel light arrangement scene of indoor visible light positioning(VLP),a code division multiple access(CDMA)modulation and demodulation VLP system based on received signal strength(RSS)algorithm is proposed,The principles of the RSS algorithm and CDMA modulation and demodulation VLP system are introduced,and the positioning accuracy of the system is verified by experiments.The experimental results show that the maximum error of the positioning of the fixed point is 0.3 m without considering the factors such as real-time movement and delay refresh.The algorithm solves the problem of low positioning accuracy of the edge corner region in the traditional positioning algorithm and improves the robustness of the VLP system.