Power compensation in WLAN positioning using a smartphone

2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP) Pub Date : 2014-04-21 DOI:10.1109/ISSNIP.2014.6827619

Masaaki Yamamoto, T. Ohtsuki

引用次数: 1

Abstract

In regard to achieving accurate WLAN positioning, a model of the power absorption by a person was experimentally devised. Parameters of the model are estimated using maximum likelihood estimation (MLE), and the angle of power absorption is measured by a magnetic sensor built into a smartphone. On the basis of the measured angle, the proposed method compensates the power absorption and the influence of multipath fading. According to evaluations by experiment and simulation, positioning error of the proposed method is 28% to 32% lower than that of the conventional method, and the proposed method achieves RMSE of 2.26 m for sparse deployment of access points.

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使用智能手机的WLAN定位中的功率补偿

为了实现准确的无线局域网定位，实验设计了一个人的功率吸收模型。利用最大似然估计(MLE)估计模型的参数，并通过智能手机内置的磁传感器测量功率吸收角度。该方法在测量角度的基础上，补偿了功率吸收和多径衰落的影响。实验和仿真结果表明，该方法的定位误差比传统方法降低28% ~ 32%，对于接入点的稀疏部署，该方法的RMSE为2.26 m。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)

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