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Singular Spectrum Analysis (SSA) is a nonparametric approach used to decompose a time series into meaningful components, related to trends, oscillations and noise. SSA can be seen as a spectral decomposition, where each term is related to an eigenvector derived from the trajectory matrix. In this context the eigenvectors can be viewed as eigenfilters. The frequency domain interpretation of SSA is...
This paper presents a phonetic analysis of Arabic speech language phonemes using hidden Markov model classifiers and their confusion matrices. For this purpose, a new classical Arabic speech corpus was planned and designed. The corpus is based on recitations from The Holy Quran of specific scripts. Semi-manual labeling and segmentation of the audio files along with other language resources such as...
This article proposes a gender and geographical origin recognition system for Arabic speakers based on the dialect and accent characteristics. We demonstrate that the speaker gender and nationality can be determined from colloquial Arabic speech and recommend that this system can be integrated to more complex biometric applications. The acoustic features of our proposed dataset used to identify the...
Orthogonal Frequency Division Multiplexing (OFDM) signals suffer from high PAPR (Peak to Average Power Ratio). Cyclic shifted sequences (CSS) was proposed as a solution to high PAPR. CSS reduces PAPR stochastically by giving some independent cyclic shifts to the time-domain signals of clusters. In CSS, however, we must transmit side information (SI) regarding the cyclic shift. Although a blind method...
Capacity analysis for line-of-sight (LOS) millimeter-wave (mmWave) quadrature spatial modulation (QSM) multiple-input multiple-output (MIMO) system is presented in this paper. QSM is a new MIMO technique proposed to enhance the performance of conventional spatial modulation (SM) while retaining almost all its inherent advantages. Furthermore, mmWave utilizes a license-free wide-bandwidth spectrum...
We consider the problem of minimizing the routing power consumption in software-defined networks. The network is composed of software-defined networking (SDN) nodes and a central controller where routing decisions are centralized. More specifically, the central controller minimizes the routing power consumption by routing flows on the minimum number of active links with the lowest discrete link rates...
This paper analyzes code-aided interference suppression techniques for communication systems with minimum shift keying (MSK) modulation. Base on the minimum bit error rate (MBER) criterion, we develop the so-called MBER detector and explain how it is related with the conventional MMSE (minimum mean square error) detector. Inspired by the MBER detector, a new subspace projection (SP) detector is proposed...
The performance of Synthetic aperture radar (SAR) imagery is often significantly deteriorated by the random phase noises arose from the atmospheric turbulence or frequency jitter of the transmit signal within SAR observations. The computational time of the traditional phase retrieval based SAR autofocus algorithms is sharply increased with the size of scene. In this paper, we recast the SAR imaging...
Barrier coverage provides intrusion detection for various national security applications. If the network is randomly deployed, in moderately dense networks, the full end-to-end barrier line might not be provided. To fill the breaks and to assure the intrusion detection, additional nodes have to be introduced. The network should be designed in a way that enables the good (cost/benefit) balance between...
The reconstruction of nxn-pixel Synthetic Aperture Radar imagery using Back Projection algorithm incurs O(n2·m) cost, where m is the number of pulses. This paper presents dynamic data driven multiresolution algorithms to speed up SAR backprojection on multiple GPUs. A critical part of this spatially variant reconstruction process is load balancing, which circumvents asymmetric work assignment. Our...
In this paper, MobiX technology provides security for online services using mobile devices with a wide range of customers including governments, military, business enterprises, and scientific organization, and individuals have been proposed. MobiX is a software security solution technology to enhance the networked mobile device trustworthiness, application integrity, preventing users from malware...
The identification of slowly-varying noise parameters in non-linear state-space models constitutes a long-standing problem. The present paper addresses this task using the Bayesian framework and sequential Monte Carlo (SMC) methodology. The proposed approach utilizes an algebraic structure of the model so that the Rao-Blackwellization of the parameters can be performed, thus involving a finite-dimensional...
This paper presents an iterative Variational Bayes (VB) algorithm that allows sparse recovery of the desired transmitted vector. The VB algorithm is derived based on the latent variables introduced in the Bayesian model in hand. The proposed algorithm is applied to the Angle-of-Arrival (AoA) estimation problem and simulations demonstrate the potential of the proposed VB algorithm when compared to...
We address the problem of learning an efficient and adaptive physical layer encoding to communicate binary information over an impaired channel. In contrast to traditional work, we treat the problem an unsupervised machine learning problem focusing on optimizing reconstruction loss through artificial impairment layers in an autoencoder (we term this a channel autoencoder) and introduce several new...
For a set of 2D objects such as image representations, a 2DPCA approach that computes principal components of row-row and column-column covariance matrices would be more appropriate. The Generalized Low Rank Approximation of Matrices (GLRAM) approach has proved its efficiency on computation time and compression ratio over 1D principal components analysis approaches. However, GLRAM fails to efficiently...
This paper is focused on the hardware modeling and the algorithms mapping on the digital signal processor (DSP) with the very long instruction word (VLIW) architecture, such as TMS320C6000. The general methods to develop an efficient application for the target processor combine high- and/or low-level programming languages. Although the hardware capabilities of the nowadays processors and compilers...
A large corpus of ceramic sherds dating from High Middle Ages has been extracted in Saran (France). The sherds have an engraved frieze made by the potter with a carved wooden wheel, used as a dating to study the dissemination of productions. ARCADIA project aims to develop an automatic classification of this archaeological heritage. The sherds are scanned using a 3D laser scanner. Then, a binary pattern...
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