Research Publications
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By Year By Research Group | We introduce a discrete-time Markov switching system control model for a control algorithm that is executed on a device with time-varying computing resources. We outline the stability expressions for a number of linear control scenarios and we illustrate ... This paper outlines the problem of multi-static Doppler-based target position and velocity estimation. The Fisher information matrix is derived given a separate target illuminator and then given a target-based isotropic signal emission. Some remarks ... Wireless multi-hop networks with infrastructure support have been actively studied to solve the scalability problem in large scale vehicular and sensor networks that the end-toend throughput and other performance metrics decrease sharply with the ... In this paper, we study the information propagation speed in a 1D mobile ad hoc network formed by vehicles Poissonly distributed on a highway and travelling in the same direction but with random Gaussianly-distributed speeds, independent between vehicles.... Consider a wireless sensor network with i.i.d. sen- sors following a homogeneous Poisson distribution in a given area A in R2. A sensor located at x2 ∈ A is directly connected to a sensor located at x1 ∈ A with probability g (x2 − x1), independent of any ... This paper introduces and surveys a number of determinant constraints on the measurement errors in a variety of positioning scenarios. An algorithm for exploiting the constraints for accurate positioning is introduced and the relationship between the ... The problem of global positioning using a rigorous Bayesian framework based on the theory of random finite sets and their corresponding density functions is covered in this condensed tutorial. The positioning scenario considered involves a number of ... Firstly, an exposition of random-set-based estimation in general networked control systems is examined. This provides a background for the work introduced in this paper. This exposition is also aimed at highlighting the advantages of the random-set-based ... A cornerstone for cognitive mobile agents is to represent the vast body of knowledge about space in which they operate. In order to be robust and efficient, such representation must address requirements imposed on the integrated system as a whole, but ... The problem of multi-object tracking with sen- sor networks is studied using the probability hypothesis density filter. The sensors are assumed to generate signals which are sent to an estimator via parallel channels which incur independent delays. These ... We re-examine the problem of global localization of a robot using a rigorous Bayesian framework based on the idea of random finite sets. Random sets allow us to naturally develop a complete model of the underlying problem accounting for the statistics of ... The problem of multiple-sensor-based multiple-object tracking is studied for adverse environments involving clutter (false positives), missing measurements (false negatives) and random target births and deaths (a priori unknown target numbers). Various (... We consider the problem of distributed bearing-only formation control. Each agent measures the inter-agent bearings in a local coordinate system and is tasked at maintaining a specified angular separation relative to its neighbors. The problem we consider... Erroneous local geometric realizations in some parts of the network due to the sensitivity to certain distance measurement errors is a major problem in wireless sensor network localization, which may in turn affect the reliability of the localization ... Coverage is an important problem in wireless networks. Together with the access probability, which measures how well an arbitrary user can access a wireless network, in particular VANET, they are often used as major indicators of the quality of the ... We analytically characterize the energy consumption per successfully transmitted packet in end-to-end packet transmissions in a identically and independently distributed in a square area following a homogeneous Poisson process. It is assumed that a ... This letter introduces a simple convex, constraint based, optimization protocol for the problem of relative clock synchronization in wireless (sensor) networks. The problem of target localization involves estimating the position of a target from multiple and typically noisy measurements of the target position. It is well known that the relative sensor-target geometry can significantly affect the performance of ... The problem of target localization involves estimating the position of a target from multiple and typically noisy measurements of the target position. It is well known that the relative sensor-target geometry can significantly affect the performance of ... Relay technologies have been actively studied and considered in the standardization process of next-generation mobile broadband communication systems such as 3GPP LTE-Advanced, IEEE 802.16j, and IEEE 802.16m. This article first introduces and ... |