Robust localization in wireless sensor networks using RSSI

In recent years, several innovative algorithms for localization of wireless sensor networks (WSNs) have been proposed by the researcher. Since wireless sensor nodes have limited processing power and the channel conditions are difficult to predict, therefore, there is a need of a low complexity localization technique that can efficiently identify channel condition and select an appropriate method of localization. In this regard, this article presents a robust localization scheme that minimizes localization delays while consuming minimal energy of wireless nodes. Extensive simulations are performed which illustrate that the proposed technique reduces the delays in localization and increases the lifetime of nodes while maintaining a fairly low mean location estimation error. The results also demonstrate that the proposed scheme performs fairly well even with limited numbers of anchor nodes in the network.