Abstract
Current machine learning techniques for indoor localization of wireless devices assume a single wireless propagation loss setting, making them unfeasible for reliable production deployment. This paper proposes a new indoor localization technique designed for variable propagation loss environments based on deep autoencoder and recurrent neural network (RNN), implemented threefold. This paper proposes a new indoor localization technique designed for variable loss propagation environments based on deep autoencoder and recurrent neural network (RNN), implemented in three stages. First, we extract statistical feature values from collected RSSI. Second, a deep autoencoder is used to remove wireless propagation noises introduced by variable fading settings. Third, an RNN performs the localization task taking into account previous sensor measurements. Experiments performed in 3 simulated testbeds with distinct propagation loss settings have shown that current approaches decrease localization accuracy by up to 30% when a different propagation loss is faced. In addition, our proposed model improved localization accuracy by up to 25.8% regardless of the current environment propagation loss.
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