In this paper, we propose a Genetic Algorithm (GA) to optimize sensor nodes’ energy consumption. Attention is paid to the clustering technique as an efficient way for reducing energy consumption of a sensor node as well as the cost of transmission. We use a multi-objective algorithm that generates an optimal number of sensor-clusters with clusterheads and minimizes the cost of transmission. The components are thereafter used and the average fitness of the system is evaluated. The effectiveness of our algorithm is shown by simulation.

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