The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Bearing fault diagnosis has attracted significant attention over the past few decades. In this paper, Alpha-stable distribution was introduced for feature extraction from faulty bearing vibration signals. Such a non-Gaussian model can accurately describe statistical characteristic of bearing fault signals with impulsive behavior. After extracting feature vectors by Alpha-stable distribution parameters,...
The cell management is as much important as the cell charge method. In order to manage effectively cell, a good knowledge of cell behaviors is required. Behaviors - electrical and thermal - are captured by the cell model. Cell modeling is very common in literature, but parameters extraction is not precisely explained. This paper will deal at first with an electro-thermal model based on extended Kalman...
Li-ion rechargeable batteries present an useful energy, low battery effect, and slow Self-discharge loss of charge when not in use. In this paper, we describe a VHDL-AMS model describing coupled electrical and thermal behaviors of a Li-Ion cell. This model relies on the experimental extraction of real characteristic parameters by using an efficient and low-cost test bench. Therefore, it allows to...
Nowadays, the current challenge in the wireless digital systems is to design new digital, generic and “universal” architectures, take charge of functionalities previously managed by different circuits. Moreover, these ones must be sufficiently flexible to support multiple transmission standards and easily adaptable for future evolutions. In this work, we propose a digital architecture for modulation...
This paper presents a self-organized reliability technique to efficiently handle error localization in a Wireless Networked MPSoC. The wireless multi-node system consists of several nodes integrating MPSoC based Network-on-Chip (NoC) and communicating through ZigBee communication. We focus on the error detection and localization in NoCs located in each node of the wireless multi-node system. We propose...
This paper proposes a new reliable router allowing accurate online error detections in dynamic Network on Chip (NoC). The proposed router has the capability to detect and localize accurately inner or outer data packet errors of the router while distinguish between temporary and permanently errors. The error detection mechanisms of the proposed switches and advantages with regards to the other main...
Ultra-wideband (UWB) technology for the localization of wireless sensor networks has received considerable attention last few years. This technology is dedicated for indoor localization using a fine delay of resolution and obstacle-penetration capabilities. A lot of challenges remain before implementation of UWB can be deployed on a large scale like non-line-of-sight (NLOS which is especially critical...
We propose in this paper a new hardware architecture for implementing the hyperchaotic Lorenz generator using FPGA technology. The goal is to design a new complex chaotic system which can be used as an unidentifiable key generator in embedded cryptosystems. The proposed architecture provides good performances in terms of throughput and resources cost required for highly secure communications between...
A critical process in real-time optical microscopy applications, such as cancer cells detection, is the determination of a cells position in the histopathological image. Aiming at low-cost and efficiency, a proof-of-concept study was done to distinguish between normal and abnormal cells based on optical microscopy at the LICM laboratory. A snake/active contour method was developed in which several...
In this paper, we propose a robust and compact design architecture of hardware chaotic key generator for real-time images encryption. The new proposed approach combines the perturbation technique with a non-linear switching between multiple three-dimensional continuous chaotic systems. The originality of this new scheme is that it allows a low-cost image encryption for embedded systems while still...
In this paper, we evaluate the broadcast delivery of Scalable Video Coding (SVC) stream over the DVB-T2 system, using differentiated robustness for each SVC layer based on the DVB-T2 MPLP mechanism. Laboratory measurements and field tests are done for this concept. Mobile reception is evaluated both in laboratory conditions using the TU6 channel and in the field at a limited speed which the current...
Digital Video Broadcasting-Handheld (DVB-H) and Terrestrial Digital Multimedia Broadcasting (T-DMB) are the most known standards that enable digital television transmissions to handheld or mobile receivers in Europe. The emerging DVB-T2 standard enables a network based on frequency diversity coding (called Alamouti Space-Frequency coding) suitable for multipath propagation environments which presents...
Image analysis in cancer pathology applications has evolved considerably in the last years [1]. The areas concerned were particularly those in which the diagnosis was based on the medical image processing and analysis. Few studies have successfully investigated the automatic classification of colonic pathology images if they contain healthy cells or cancerous cells. The objective of this work is the...
We present an optimization of reliable Network on Chip (NoC) suitable for dynamic reconfigurable systems based on FPGA. The originality of our approach resides on a strategic placement of routers incorporating elements of dependability in order to detect and correct the errors of the data packets. The solution is a factorization of these reliable routers encompassing routers without any error detection...
In this paper, we evaluate the performances of distributed Tarokh Space Frequency Block Coding (SFBC) compared to classical Single Frequency Network (SFN) and Distributed Alamouti MISO with SFN (MISO-SFN) for the emerging second generation digital TV Broadcasting (DVB-T2). We showed the performance of SFN and Alamouti MISO-SFN for two, three and four transmitters for DVB-T2 chain. We also compared...
This paper proposes a new Cryptosystem for encryption of the real-time embedded applications. The proposed hardware architecture is based on a chaotic rule switching of several three-dimensional continuous chaotic data generators. The originality of the proposed approach is a new stream chaotic key generator used for real time data encrypt and decrypt. Our architecture, implemented in Virtex Xilinx...
We present a new reliable high-performance interconnection approach destined for complex System on Chip based on the network-centric approach. The originality of our approach is to avoid the lost of data packets, detect routing errors and reduce data packets latency by emptying output buffer when the neighbour router is unavailable. We present the basic concepts of the reliability communication technique...
In this paper we present an alternate Network-on-Chip switch incorporating a new on-line routing error detection technique. This router implements an adaptive routing algorithm suitable for MPSoC architectures in which dynamic and partial reconfiguration is allowed. The originality of the detection mechanism resides in the capacity to distinguish routing errors from adaptive decisions (to bypass faulty...
In this paper, we evaluate and compare the performances of different network combinations from the usage of coded MISO (Multiple Input Single Output) in a Single Frequency Network (SFN) for DVB-T2. We address classical SFN and different MISO-SFN network combinations. We mean by different combinations, the organization and position of antennas where some of them transmit the same symbols and others...
DVB-T2, second generation of terrestrial digital video broadcasting standard, promises performance gains because of improved coding, modulation and multiple antenna technologies. This paper proposes a simulation and evaluation performance of the DVB-T2 in order to address the improvement of DVB-T2 compared with DVB-T in a single frequency network (SFN) transmission for receiving signals having the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.