Dian Fan

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This paper concentrates on self-healing in reconfigurable WLANs. To cope with the accidental network failure, a Distributed Network Self-Healing (DNSH) mechanism, including automatic network failure detection and appropriate network failure recovery is designed for independent reconfigurable APs in high-density WLANs. By automatically applying the(More)
Delaunay meshes (DM) are a special type of triangle mesh where the local Delaunay condition holds everywhere. We present an efficient algorithm to convert an arbitrary manifold triangle mesh <i>M</i> into a Delaunay mesh. We show that the constructed DM has <i>O</i>(<i>Kn</i>) vertices, where <i>n</i> is the number of vertices in <i>M</i> and <i>K</i> is a(More)
Intrinsic Delaunay triangulation (IDT) is a fundamental data structure in computational geometry and computer graphics. However, except for some theoretical results, such as existence and uniqueness, little progress has been made towards computing IDT on simplicial surfaces. To date the only way for constructing IDTs is the edge-flipping algorithm, which(More)
In cognitive radio systems, cooperative spectrum sensing is executed among multiple secondary users to detect spectrum holes without causing deleterious interference to primary users. The larger the number of cooperating secondary users, the greater the performance gain of cooperative sensing. However, the complexity of the cognitive radio system will(More)