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Extensive channel data rate, high spectral efficiency, and advanced digital signal processing using state-of-the-art electronics are the main features for next generation optical networks. These technologies are complementary integrated together to develop optical superchannel transmission. This paper demonstrates an optical comb source with variable number of subcarriers and apply reconfigurable...
This paper presents a review of existing works and solutions in the field of solar/electromagnetic energy harvesting and RF transmission. Solar cell antenna is a combination of Solar cell and Microstrip antenna. Solar Cell Antenna design is mainly used in autonomous property for transceiver. The objective of this work was to use photovoltaic solar cells in patch antenna structures. The radiating patch...
One of the most challenges in wireless technology is to design new algorithms for low power devices without loosing performances in term of quality of service. Wireless Body Area Network(WBAN) is a short range communication technology used in medical telemetry and healthcare, on body sensors sends collected measurements via radio interface. We propose in our paper a method that enhances energy consumption...
The aim of a wireless Structural Health Monitoring (SHM) system is to monitor and assess structural integrity using wireless sensor networks (WSNs). Careful node placement in wsn can be a very effective optimization means for achieving the desired SHM. In this paper, we developed the different strategies of node deployment, therefore, we report on the current state of the research on optimized node...
In this paper, a theoretical study of biosensor based on microwave split-ring resonators (SRRs) excited by microstrip transmission line is presented. The sensor consists of a microstrip line loaded with circular SRRs on both sides. The proposed metamaterial sensor was designed on Rogers RT5880 substrate having dielectric constant of 2.2 and thickness of 0.76 mm. The operating principle of these biosensor...
In present study, three longitudinal piezoelectric transformers with size of 18.5×3.5×2 mm3, 26×3×1.5 mm3 and 24×3×2 mm3 are fabricated and tested with a soft PZT (P191) piezoelectric ceramic. The input and the output part vibrate in longitudinal extensional mode. Three configurations of the input and the output voltage are proposed. The electrical measurements results are successfully compared to...
This paper reports on classification methods applied and tested for land use classification in a semi-arid environment. Our study, conducted on two irrigated sites located in the Kairouan region, the largest irrigated region in Tunisia, compared Support Vector Machine (SVM) and Maximum Likelihood classification of SPOT-7 data. To produce a per-field classification a Mean-Shift Segmentation has been...
Using a new model order reduction based on frequency selection and optimal genetic algorithm, a very low order speech model is presented. In our approach, the modeling process starts with a full-order classical all poles model obtained by some known methods. The original model is then reduced using a new proposed approach based on the genetic algorithms and the full order speech production system...
In order to rolling bearing fault diagnosis using vibration signal analysis, this paper presents a new procedure based on the Improved Complete Ensemble Empirical Mode Decomposition ICEMD. In this procedure, firstly, in order to calculate the feature vector, we propose the use a combination of the Improved Complete Ensemble Empirical Mode Decomposition ICEMD and Entropy techniques for determining...
This work deals with a non-linear technique to control a grid connected photovoltaic system. Sliding-Mode Controller (SMC) is proposed to offer a proper and a rapid maximum power point tracking to control the boost converter. To guarantee the SMC stability, three conditions are fulfilled and performed: transversality, reachability and equivalent control. The Sliding-Mode approach is applied also to...
It is known that propagation across line-of-sight using microwave just fits two adjacent points that are not far apart but not practical for linking two points far apart on Earth This is due to the reason of the curvature of the Earth's surface as required by the need to communicate over long distances. Communication between two points which a fair distance apart on earth surface using two antennas...
The work described in this paper presents an original hierarchical protocol based on the Partitioned Binary Search Tree (PBST*). PBST* is a new tree-based scalable distributed data structure. The principal feature of the proposed protocol is the organization of WSN as a balanced tree with one root at the base station (BS). Moreover, the protocol proposes a new technique to avoid the hot spot problem...
Emotion recognition becomes an investigated topic in affective computing for several applications. The presented paper aims to recognize human emotions using peripheral physiological signals as well as electrocardiogram (ECG), galvanic skin response (GSR), Skin Temperature (Temp) and respiration volume (RV). To achieve this purpose, we develop our work with the multimodal database MAHNOB-HCI. The...
We consider the problem of controlling single-phase grid connected photovoltaic system based on a half bridge inverter. The control objectives are threefold: i) Maximum power point tracking (MPPT) of PV system. ii) Unity power factor in the grid. iii) Regulating the output voltage to a desired reference value. The considered problem is dealt with by designing a nonlinear controller using the sliding...
This paper presents the development of an automatic wireless sensor monitoring system for civil engineering structures. The objective is to provide a solution to measure temperature, humidity and strain inside a concrete structure. The research has been focused in the early age and curing phase period. Two sensors have been used. The first sensor fiber optic Brillouin Strain and temperature, the second...
Parkinson's disease is a pathology that involves characteristic perturbations in patients' voices. This paper describes a proposed method that aims to diagnose persons with Parkinson (PWP) by analyzing on line their voices signals. First, Thresholds signals alterations are determined by the Multi-Dimensional Voice Program (MDVP). Principal Analysis (PCA) is exploited to select the main voice principal...
This paper deals with the control design of an asymmetrical cascaded multilevel inverter. This structure therefore provides the capability to produce higher voltages at higher speeds with low switching frequency which has inherent low switching losses and high converter efficiency. Selective harmonic elimination(SHE) for asymmetrical multilevel CHB inverter control is proposed. The technique utilized...
In this paper we study the masking effect on Computational Auditory Scene Analysis (CASA) based systems for single channel speech separation (SCSS). In this study, we focus on the benchmark masks of the literature that are namely: the ideal binary mask (IBM), the binary mask (BM) and soft mask. Each system is evaluated objectively and subjectively in order to highlight the effect of each mask on the...
Electrocardiogram (ECG) signal plays an important role in the primary diagnosis, prognosis and survival analysis of heart diseases. Several noise types are sources of ECG signal corruption such as electrode movement, strong electromagnetic effect and muscle noise. The principle of techniques based wavelet depends on shrinking the wavelet coefficients in the wavelet domain. These techniques prove their...
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