With the increasing number of geographical data and distributed geospatial applications with heterogeneous databases, many problems may arise while integrating the details of user‘s response from many service providers into a unified visual portal on mobile device (i.e. Street View map).Through a conventional point of view, the use of many Location Based Services (LBS) providers will imply seve...

We show that the full symbol of the Dirichlet to Neumann map of the k-form Laplace’s equation on a Riemannian manifold (of dimension greater than 2) with boundary determines the full Taylor series of the metric at the boundary. This extends the result of Lee and Uhlmann for the case k = 0. The proof avoids the computation of the full symbol by using the calculus of pseudo-differential operators...

The creative and flexible use of symbols is a unique human ability. In order to use a symbol, one must understand the basic relation between the symbol and what it represents. How do young children come to appreciate such relations? One possibility is that insight into one symbolic relation helps children appreciate different ones. The 3 studies presented here support this possibility. In Exper...

Coherent symbol by symbol detection using fractionally spaced samples in a time-varying frequency at Rayleigh fading channel is presented. The proposed detector incorporates a decision feedback (DF) maximum a posteriori (MAP) channel estimator that can be applied to a timevarying at Rayleigh fading channel with an arbitrary but known spaced-time correlation function. The best achievable bit err...

In this article, a novel detector design is proposed for orthogonal frequency division multiplexing (OFDM) systems over frequency selective and time varying channels. Namely, we focus on systems with large OFDM symbol lengths where design and complexity constraints have to be taken into account and many of the existing ICI reduction techniques can not be applied. We propose a factor graph (FG) ...

The larger roles of the community in crime prevention and improvements in technology have increased policeYcitizen communication and the distribution of information from police departments to private citizens. Combined, these changes have led to the current movement among law enforcement agencies toward sharing both summary reports and maps of crime with community groups. Although the dissemina...

A linear full elliptic second order Partial Differential Equation (PDE), defined on a d-dimensional domain Ω, is approximated by the isogeometric Galerkin method based on uniform tensor-product Bsplines of degrees (p1, . . . , pd). The considered approximation process leads to a d-level stiffness matrix, banded in a multilevel sense. This matrix is close to a d-level Toeplitz structure when the...

Given an AWGN channel, we look at the problem of designing an optimal binary uncoded communication system for transmitting blocks of binary symbols generated by a stationary source with memory modelled by a Markov chain (MC) or a hidden Markov model (HMM). The goal is to minimize the average SNR required for a given block error rate. The particular case where the binary source is memoryless wit...

Orthogonal time frequency space (OTFS) modulation has attracted substantial attention recently due to its great potential of providing reliable communications in high-mobility scenarios. In this article, we propose a novel hybrid signal detection algorithm for OTFS modulation. Based on the system model, first derive near-optimal <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink...

This paper presents a novel high-speed maximum a posteriori (MAP) decoder architecture with optimized memory size and power consumption. Area and power consumption are both reduced significantly, compared to the state-of-the-art. The architecture is also capable of decoding recursive systematic convolutional codes which are the constituent codes of the revolutionary Turbo-Codes and related conc...