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Multistate systems can model many practical systems in a wide range of real applications. A distinct characteristic of these systems is that the systems and their components may assume more than two levels of performance (or states), varying from perfect operation to complete failure. The nonbinary property of multistate systems and their components makes(More)
Wireless sensor networks (WSN) consist of a large number of tiny sensor devices that have limited power and limited sensing, computation, and wireless communications capabilities. Sensor nodes usually operate in unattended and even harsh environments, and as a result, sensor nodes are prone to failures and are vulnerable to malicious attacks. Therefore, for(More)
In this paper we consider the problem of modeling and evaluating the infrastructure communication reliability (ICR) of wireless sensor networks (WSN). Our approach is progressive and based on reduced ordered binary decision diagrams (ROBDD). Due to the nature of the ROBDD and the reduction scheme used in the progressive process, the approach is(More)
We consider the problem of reliability modeling and analysis of hierarchical clustered wireless sensor networks (WSN) in this paper. We propose reliability measures that integrate the conventional connectivity-based network reliability with the sensing coverage measure indicating the quality of service (QoS) of the WSN. And we propose a progressive approach(More)
Wireless sensor networks must be designed to be both secure and reliable, especially when they are used in national security and safety-critical applications. In this paper, we propose a new mechanism, called MVMP (multi-version multi-path), which integrates data segmentation, Forward Error Correction coding, multiple paths, and multiple versions of(More)