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Coexistence of cellular networks and wireless local area network (WLAN) in unlicensed spectrum will be a vital application scenario in the future 5G network. Listen-before-talk (LBT) is one of the mechanisms to ensure a fair coexistence among various radio access networks. In this paper, we present a LBT algorithm with an adaptive threshold jointly considering the diverse traffic load conditions of...
Foreground detection is the classical computer vision task of segmenting out motion information from a particular scene. Foreground detection using Gaussian Mixture Models (GMM) is the famous choice. Since first time proposed, many researchers tried to improve GMM. This paper focuses on the comparative evaluation of three most famous improvements in the algorithm. The improved methods are compared...
A network with dynamic weights implies a set of vertices interconnected by a set of edges, each of which bears a weight that changes with time. One example of such networks is a traffic network, wherein, the structure of the graph remains constant but the weight on the edges, signifying the amount of traffic (traffic density) changes over time. We have dealt with scenarios where flow algorithm needs...
A data driven background subtraction algorithm where each background pixel is modeled with a representative set of samples is presented. The samples are pixel values observed in preceding frames. Each pixel in an incoming frame is classified as background or foreground by comparing the pixel value with the samples in pixel's background model. The background model is periodically updated by replacing...
Feature models are widely used to capture variability, commonalities and configuration rules of software systems. We apply this technique to model component-based systems with many variants during specification, implementation, or run time. This representation allows us to determine the set of valid configurations befitting a given context, especially at run time. A key challenge is to determine the...
The assessment of network vulnerability is of great importance in the presence of unexpected disruptive events or adversarial attacks targeting on critical network links and nodes. However, it is extremely challenging to seek and safeguard against most destructive scenarios in dynamic networks where changes to their topologies are frequently introduced. In this paper, we propose CLA and CNA algorithms,...
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