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Despite the fact that the deployment of sensor networks and target tracking could both be managed by taking full advantage of Voronoi diagrams, very little few have been made in this regard. In this paper, we designed an optimized barrier coverage and an energy-efficient clustering algorithm for forming Vonoroi-based Wireless Sensor Networks(WSN) in which(More)
Wireless Sensor Networks (WSNs) designed for mission-critical applications suffer from limited sensing capacities, particularly fast energy depletion. Regarding this, mobile sinks can be used to balance the energy consumption in WSNs, but the frequent location updates of the mobile sinks can lead to data collisions and rapid energy consumption for some(More)
Due to resource constraints in Wireless Sensor Networks (WSNs), this paper contributes a distributed clustering algorithm suitable for a large scale Voronoi cell-based WSNs with sensors randomly deployed according to homogenous spatial Poisson process and each sensor becomes a cluster head (CH) with a possibility p while non-CH sensors join the cluster of(More)
This paper proposes a high precision Gaussian Mixture Model-based novel Boundary Detection 3D (BD3D) scheme with reasonable implementation cost for 3D cases by selecting a minimum number of Boundary sensor Nodes (BNs) in continuous moving objects. It shows apparent advantages in that two classes of boundary and non-boundary sensor nodes can be efficiently(More)
Several multiantenna based spectrum sensing detectors have been presented for overcoming noise uncertainty by exploiting antenna correlation. However, these detectors degrade seriously when the antenna correlation is low or the noises through antennas are correlated (i.e. spatial colored noise), and even fail to perform sensing when primary signals through(More)
In wireless environment, the increase in the number of users and the demand for a higher rate have triggered rapidly booming energy consumption at the base station. Therefore, energy efficient design in wireless networks has become essential. This paper studies the problem of energy efficient downlink resource allocation for multi-user OFDM system and(More)
Recent advances in micro electro mechanical systems (MEMS) and wireless communication technologies are responsible for the emergence of Wireless Sensor Network (WSN) that deploys thousands of low-cost sensors integrating sensing, processing and communication capabilities. It motivated the use of mobile sensor node in WSNs for many surveillance applications(More)
Dynamic spectrum access in the cognitive radio network can make use of spectrum holes by chance. It can improve the efficiency of spectrum utilization without degrading the primary users (PUs). We propose a new method to assign channels in multi-hop cognitive radio networks. First of all, we choose a reasonable spectrum perception approach to sense if the(More)
In the paper, an intelligent, energy-aware target detection algorithm in area monitoring of hierarchical clustered wireless sensor network was proposed where the corresponding messages to the detected targets are reliably relayed to the sink in the form of aggregated data packets. It has following key features: a new concept of multi-hop neighborhood based(More)