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Currently, most of node localization algorithms are designed based on the two-dimensional space, but the practical application is carried out in three-dimensional space. A three-dimensional node localization hybrid algorithm called DV-Hop-AC-PSO is proposed, which combines the advantages of DV-Hop, ant colony and particle swarm algorithm. In the proposed algorithm, particle swarm algorithm is adopted...
Hub-and-spoke combined with point-to-point airline network is the most widely used airline network. Based on the background of CAFTA(China-ASEAN Free Trade Area) economic integration, for the purpose of designing basic airline network for Nanning Airport, this paper first evaluates airports both in China and ASEAN (CASEAN) by factor analysis method, then chooses corresponding airports and eventually...
Multiple antennas and relay can improve spectral efficiency of a network. Half duplex relay channels employing decode-and-forward and total power constraint are considered in this work. The resource includes power and time for the receive and transmit stages of the relay. Resource allocation algorithm is designed in order to maximize an achievable rate. The source and the relay nodes are assumed to...
Coverage control is a basic research problem in wireless sensor networks (WSNs). This paper proposes a distance optimization based coverage control algorithm, which utilizes ant colony algorithm to place sensor nodes to an appropriate position and optimize the moving path of mobile sensor nodes. The proposed algorithm not only guarantees the biggest coverage of wireless sensor networks, but also reduces...
In this paper, we propose a new routing algorithm for the general incomplete star interconnection network (GISN). The diameter of GISN is shown to be bounded by 3.5n-5. This improves on a 4n-7 routing algorithm described earlier in Shi Yutao, et al., (2002). We also prove that the diameter of GISN is more than or equals to lfloor3(n-2)/2rfloor+1.
Localization error is a widely considered problem in the node localization of wireless sensor network. The error can be caused by many reasons, and the most important three reasons are measurement distance, localization cumulative error and the number of anchor nodes. This paper proposes a range-based synergetic localization algorithm, which makes the best of all the sensor network for localization,...
Many types of shape descriptors have been proposed for 2D shape analysis, but most of them consist of component features that are not adapted to specific problems. This has two drawbacks. First, computation is wasted on the irrelevant components; second, the accuracy is impaired. This paper proposes an effective method that generates compact descriptors adapted to specific problems in hand, where...
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