A method for indoor Wi-Fi location based on improved back propagation neural network

Abstract

In order to achieve high precision on indoor location, a Wi-Fi indoor location method based on improvedback propagation (BP) neural network is proposed. The classical BP neural network is optimized in real time by theant colony optimization algorithm. Meanwhile, the momentum term is introduced to construct an improved four-layerBP neural network model. The model uses the Wi-Fi signal feature as the input of the BP neural network and succeedsin the area classification under multiple Wi-Fi signal features. The experimental results demonstrate that the improvedBP neural network can increase the classification accuracy of the classifier effectively, and achieve a high-precision indoorarea location. Furthermore, it performs better practical results while ensuring the time complexity. The advantagesof this method are high practicability, low cost, high prediction classification accuracy, and robust stability, which canachieve the efficient classification of the short-range area.