Localization is an important issue and has been applied in many applications. Many localization mechanisms have been developed in the last decade, including GPS-based, Wi-Fi RSSI Signal based as well as BLE Beacon based localizations. The common disadvantages of the existing localization mechanisms is that they belong the class of Active Localization which requires the localization target carrying a receiver such as mobile phone or navigator. Compared with the passive localization mechanisms, the active localization mechanisms cause inconvenient and create hardware cost. This paper proposed a CSI-based Passive Localization Mechanism, or called CPLM in short which identifies the human locations in the indoor environment based on Channel Impulse Response (CIR) information. Experiment results reveal that the proposed CPLM outperforms existing works in terms of localization accuracy, latency as well as the reliability.
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