Ahmed Mouhsen

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The deployment of wireless sensor networks in many application areas requires self organization of the network nodes into clusters. The clustering Algorithm is a kind of key technique used to reduce energy consumption. Efficient way to enhance the lifetime of the system is to partition the network into distinct clusters with a high energy node as cluster(More)
In this paper an Energy Efficient Clustering Scheme with Mobile Sink (EECSMS) for Heterogeneous Multilevel Wireless Sensor Networks is proposed. In EECSMS, the cluster-heads (CHs) are elected by a probability based on the ratio between residual energy of each node and the average energy of the network, the sink or base station (BS) moves towards each CH by(More)
Energy efficiency and quality of service are foremost concerns in Wireless Sensor Networks (WSNs). Among the methods used to achieve these requirements there is virtual multiple input multiple output (MIMO) technique, where sensor nodes cooperate with each other to form an antenna array. These multiple antennas can be used to improve the network performance(More)
In This paper, the design and analysis of a new compact printed antenna for UWB applications are presented. This antenna consists of a pentagon patch with Y-shaped slot and a partial ground plane with a periodic rectangular slot. The effect of various parameters on UWB characteristics has been analyzed by using 3D electromagnetic Simulator CST Microwave(More)
Band pass filters plays a significant role in wireless communication systems. Transmitted and received signals have to be filtered at a certain center frequency with a specific bandwidth. In this paper, a new microstrip filter pass band at 2.45 GHz is presented; the filter structure is based on the microstrip line with a metamaterial structure, which is(More)
In this paper we use the paper as a substrate for the design of UHF RFID Tag. The paper use is intended to reduce the cost of manufacturing tags and also preserve the environment because the paper is a ubiquitous material with low cost and friend of the environment which will facilitate deployment of the RFID system at large scale. The design is a meander(More)
Radio communications using ultra wideband (UWB) frequency have rapidly developed since the beginning of the year 2000. This technique offers advantages that made it attractive to a large number of civilian and military applications. The aim of this work is the study of the geometry features of a UWB antenna and the improvement of the bandwidth by inserting(More)
Wireless sensor nodes are typically powered by non-rechargeable batteries and deployed in an area of interest to supervise or monitor various phenomena (temperature, pressure, humidity...). So, constrained energy is the most important feature of wireless sensor networks (WSNs). In WSNs, saving energy and extending network lifetime are great challenges.(More)
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