This paper proposes a novel indoor positioning scheme based on visible light communication(VLC).A new indoor VLC positioning scheme using fingerprint database with multi-parameters have been raised.We conduct simulati...This paper proposes a novel indoor positioning scheme based on visible light communication(VLC).A new indoor VLC positioning scheme using fingerprint database with multi-parameters have been raised.We conduct simulation and experimental research on the illumination intensity distribution of several direction parameters.In the experiment,four LED matrixes are identified by LED-ID with room dimensions of 3.75×4.00×2.7 m^3.The results show that the mean of the location error is 0.22 m in the receiving plane,verifying the correctness and feasibility of the positioning scheme.展开更多
基金supported by ZTE Industry-Academia-Research Cooperation Funds under Grant No.2014ZTE02-12
文摘This paper proposes a novel indoor positioning scheme based on visible light communication(VLC).A new indoor VLC positioning scheme using fingerprint database with multi-parameters have been raised.We conduct simulation and experimental research on the illumination intensity distribution of several direction parameters.In the experiment,four LED matrixes are identified by LED-ID with room dimensions of 3.75×4.00×2.7 m^3.The results show that the mean of the location error is 0.22 m in the receiving plane,verifying the correctness and feasibility of the positioning scheme.
文摘全球导航卫星系统(Global Navigation Satellite System,GNSS)是目前应用最广泛的导航系统之一,但导航卫星信号到达地面时比较微弱,容易受到干扰,且无法在室内和城市峡谷环境中使用。近年来,移动通信技术发展迅速,具有基站布站密度高、信号信噪比强的特点,常被作为机会信号(Signal of Opportunity,SOP)定位导航系统进行研究。5G移动通信采用极简化设计,用于信道质量估计的参考信号不能随时获取,限制了利用上述信号实现SOP定位可能性。针对以上问题,结合5G移动通信中的波束成形技术,充分利用5G新引入的同步信号块(Synchronization Signal Block,SSB)中的解调参考信号(Demodulation Reference Signal,DMRS),提出了基于5G参考信号的测距测向方法,实现了多径误差补偿的测距技术和基于信噪比拟合的测向技术。实验表明,测距均方根误差(Root Mean Square Error,RMSE)为21.3 m,比不使用DRMS时的精度提高了46.1%;测向RMSE为7.9°,使得未来利用5G移动通信参考信号构建SOP定位导航系统成为可能。
