Abdennaceur Baghdad

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The telemedicine is a medical practice which consists in using new technologies of information and communication (NTIC). It makes it possible to facilitate the transfer and diagnosis of several medical data at distance. The security of medical images plays an important role to ensure and guarantee the integrity and confidentiality. This paper presents a(More)
In this paper we present a performance comparison of an inset fed circular microstrip patch antenna designed to operate at milimeterwave frequencies, with and without a DGS (defected ground plane structure). The parameters such as gain, directivity, return loss and bandwidth are notably improved in our proposed prototype. Also a comparison is made with(More)
In the past few years the mobile network's telecommunication field has known a huge progress in term of developing new standards to enhance the quality of service (LTE, LTE-A, 5G Ω). Positioning techniques in LTE (Long Term Evolution) network are gaining more interest since the majority of mobile communication operators are deploying their 4G(More)
In this paper, the design of a microstrip patch antenna using superstrate layers for performance enhancement is presented. The proposed antenna is excited by using the edge, inset, probe and aperture feeding methods. Genetic Algorithm optimization technique has been utilized for the optimization of patch antenna dimensions. The double layer dielectric(More)
Mobile positioning by cellular networks has received growing attention and several researches are carried out to enhance positioning algorithms and techniques that will be able to give better performance at multiple environments (outdoors/indoors). In this paper, we are interested in UTDOA (uplink time difference of arrival) approach to determine the(More)
Region of interest ROI image and video compression techniques have been widely used in visual communication applications in an effort to deliver good quality images and videos at limited bandwidths. Foveated imaging exploits the fact that the spatial resolution of the human visual system (HVS) is highest around the point of fixation (foveation point) and(More)
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