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The 2017 International conference on Wireless Technologies, embedded and intelligent Systems (WITS-2017) is organized by the ENSA School of Fez and the ERSI Laboratory with a large collaboration with the FST of Fez and ANRITE Association. This conference is highly sustained by the Sidi Mohamed Ben Abdellah University which deployed its entire infrastructure and its large financial provision to help...
A 45 degree differential microstrip phase shifter operating in the frequency band ranging from 1.4 GHz to 2.7 GHz is presented in this paper. It is designed by adopting the model of double parallel Schiffman phase shifter and simulated on an FR4 substrate by using two electromagnetic simulation software, ADS from Agilent technologies and CST Microwave Studio. The proposed phase shift circuit offers...
This paper adeals with an implementation and comparison of the last software version of the new video coding standard High Efficiency Video Coding (HEVC) encoder in the embedded processors ARM cortex A8 and A9 using NEON Technology which is the single-instruction-multiple-data for these processors. The two processors reveal almost the same performances but with the computational complexity of the...
Mobile communications are greatly influenced by environmental noise that may cause a significant deterioration in automatic speech recognition (ASR) systems performance. In this paper, we present a new framework integrating a noise-robust front-end in distributed speech recognition (DSR) systems. Using the Aurora-2 speech database, the authors evaluate the development of an additional feature set...
Skew angle detection is one of the most important component of Optical Characters Recognition (OCR) systems and documents analysis. Taking documents by the blind and visually impaired people with a mobile phone always have a degree of inclination. In this paper, a novel and an efficient method based on extraction of Harris corner features points and Hough transform is presented to estimate skew angle...
In this paper, we compare classification results, of six facial expressions including joy, surprise, sadness, anger, disgust, and fear, relying on two different methods of distance computing between 121 landmark points on the face. Facial features were computed using L1 norm (Manhattan distance) in the first case and L2 norm (Euclidean distance) in the second case. Training and test data have been...
The users need more flexibility access network and high throughput using wired or wireless connection. Moreover, Wireless Local Area Network (WLAN) can work in different bands at carrier frequency 2.4 GHz, 5 GHz or 60 GHz. To offer such variety, we propose a multiservice system using Radio over Fiber (RoF) technology, which can transport wired Base Band (BB), 5 GHz Multi Input Multiple Output (MIMO)...
In this work, we present a miniature multi-layered patch antenna for K-band applications. The size of the antenna has been optimized by using two substrates layers, introducing a rectangular probe between the layers, and insertion of an air-filled cavity into the lower substrate. Analysis and modeling were performed using the HFSS (High Frequency Structure Simulator) simulator based on the finite...
This paper presents a new switched beam antenna array working at 26GHz for future 5G application, based on the sub-arrays containing an association of various shaped slot ( L, U, S) engraved in Substrate Integrated Waveguide (SIW). The phase shift between each slot is obtained by adjusting the position of transversal slots. The beam tilt is obtained by choosing the adequate slots combination. Finally...
In this work, we have developed an analytical model of an actively Q-switched Ytterbium doped fiber laser by using two coupled cavities with amplifying fibers in Mach-Zehnder interferometer configuration. We demonstrate that this oscillator system provides record high peak power nanosecond pulse. This study shows that the energy obtained is almost twice the energy of an individual fiber laser. We...
This paper introduces the design and simulation of multiband dielectric resonator antenna (DRA) for the fifth generation (5G) of cellular networks. The radiating element is a unique rectangular shaped DRA element with a distribution feeding technique based on micro-strip feed line coupled via an elliptical slot. The feed position and configuration has been deliberately designed for optimized matching...
The Cloud Computing is a developing IT concept that faces some issues, which are slowing down its evolution and adoption by users across the world. The lack of security has been the main concern. Organizations and entities need to ensure, inter alia, the integrity and confidentiality of their outsourced sensible data within a cloud provider server. Solutions have been examined in order to strengthen...
nowadays, mobile development for each different platform has become a critical challenge, due to the fact that it is still time and budget consuming. The cross-platform approaches are emerging as an alternative solution that many companies are starting to embrace, since it allows the development of mobile applications once for all platforms. The aim of our work is to give an exhaustive survey of cross...
Open source and closed software security has been debated for decades, vulnerabilities reported for both types of software has been under scrutiny for years. In this study, a descriptive and correlation study for two selected systems is conducted using SPSS 19. The results show that the severity score average of Linux kernel vulnerabilities is lower by %30 than the severity score average of vulnerabilities...
A novel 5.8 GHz RF-DC rectifier has been developed for wireless power transmission applications. It's about a voltage multiplier topology including 5 schottky diodes well known by their low threshold (150 mv) implemented using microstrip lines technology on an FR4 substrate with dielectric permittivity constant 4.4, thickness of 1.6mm and loss tangent of 0.025. The rectifier is loaded by a 160Ω resistive...
In this paper, we propose a novel reconfigurable patch antenna for wireless communication systems. The proposed reconfigurable antenna is based on PIN diodes associated to three U shaped resonators. The operating frequency of the proposed antenna can be tuned by changing the state of the PIN diode. In this work, we modelized the PIN diode using two different methods. This circuit is mounted on an...
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