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Wireless sensor networks (WSNs) have wide applications in environmental monitoring fields. Many algorithms were proposed for efficient information gathering. Especially the cluster based routing schemes are getting attention due to their energy efficiency. But in most of the clustering schemes, the base station (BS) which is used to gather the information is assumed to be located far from the field...
We consider the joint routing and cooperation diversity problem in multi-hop networks, for which we seek to optimize the end-to-end outage. Simplifying the network structure via partitioning and identifying a set of nodes in each partition, we devise a routing strategy based on cooperative relays in decode-and-forward mode. In particular, this sub-optimal routing algorithm yields the best possible...
To improve the energy efficiency of nodes in Wireless sensor network, A multi-hop clustering routing algorithm is presented which is based on distributed wireless sensor network, which can improve itself in the process of use according to a kind of protocol called low energy adaptive clustering hierarchy ( Low Energy Adaptive Clustering Hierarchy, LEACH).
In this paper a clustering algorithm is proposed based on geographic region (GRA), each region selects its cluster head independently. In order to reduce energy consumption and balance the communication load, A Combination of single hop and multi-hop communication manner is adopted. The concept “next hop transit area” is put forward to simplify the routing and ensure that each communication consume...
One of the challenging aspects for wireless sensor network (WSN) clustering is to estimate the optimal cluster number. Most WSN clustering techniques have used an a priori value to determine the cluster number. A few techniques, available at the literature, attempted to find the optimal cluster number by energy minimization. However, due to the assumption of lossless communication, these initiatives...
An improved clustering scheme is proposed for the defeat of producing single-node cluster in EEDC algorithm. In the scheme, a combination of single-hop and multi-hop communication within the cluster is adopted, and the factors of energy, degree, position are considering during election of head node. Simulation results show that compared with EEDC algorithm, the new scheme runs under a more load-balanced...
In this paper, we propose a transmission frequency rendezvous approach for secondary users deployed in decentralized dynamic spectrum access networks. Frequency rendezvous is a critical step in bootstrapping a wireless network that does not possess centralized control. Current techniques for enabling frequency rendezvous in decentralized dynamic spectrum access networks either require pre-existing...
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