Different positioning schemes are based on the probability to have an observation vector at a Reference Point (RP) l, based on Gaussian probabilities. This paper presents an approach to speed-up the computation without any approximation. The consequent positioning scheme is called Smart P-FP. The comparison between Traditional (without any acceleration) and Smart P-FP is performed over different smartphones. The saved energy is about 90% for a large number of Access Points (APs) but is significant even with few APs: more than 86% with 3 APs. The proposed computation is beneficial to any -based positioning scheme.
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