Information collection scheme in underwater sensor networks with combined compressed sensing and LEACH

Due to the special applying environment, node energy consumption is a critical issue to underwater sensor networks. To solve this problem, an information collection scheme(CS_LEACH) for underwater sensor networks is proposed in this paper, which combines LEACH protocol with the new emerging compressed sensing theory. After the network nodes are clustered according to LEACH protocol, a node in some cluster will participate in the sensing process with a certain probability q. Then, all cluster heads send the weighted sum of the gathered data in each cluster to the Sink node. Sink node reconstructs the original information map of the concerned area using compressed sensing reconstruction algorithm. Simulation results show that under the premise of ensuring the reconstruction precision, the proposed CS_LEACH scheme greatly saves node energy and prolongs network life-time compared with the conventional LEACH protocol.