Wireless sensor network (WSN) is a distributed system usually comprising a set of autonomous sensors nodes. These sensors are physically small in size and are capable to communicate with each other and capable of conveying data to recipients. In a large number of applications, information is meaningful only when the locations of sensors are known and the localization is the process that accomplishes the accurate physical coordinate of these nodes. The goal of this work is to investigate the localization algorithms (RSSI, ToA and AoA) for WSN and present a performance analysis of these algorithms in terms of computation of localization error and time of execution.

Keywords - WSN, Localization, RSSI, ToA, AoA. MSE

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