Cloud computing have been playing very vital role in the rapidly growing organizations. It becomes mostly susceptible to use cloud services to share data between organizations, electronic businesses and a friend circle in the cloud computing environment. Because of the fastest development in electronic business by using the various cloud
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Advancement in wireless technologies and improved use of wireless devices demands more infrastructures-less networks like MANET (Mobile Ad hoc NETwork). Security of such a scenario is a challenging task over last few years. Because of its distinctive characteristics such as open medium and dynamic network topology, MANET can be accessible
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Wireless Sensor Network (WSN) requires various power management protocols to reduce the energy consumption. But the lifetime of sensor network greatly depend on their battery. Radio irregularity and fading in multi-hop WSN also affect lifetime of a sensor. Various cluster-based schemes are discussed as a solution for this problem. The
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The wideband antennas play significant role in the communication fields especially in satellite and military applications. Since the satellite or aircraft is in motion, the size of the wideband antenna as well as the polarization is very important. Electro-magnetic band gap structures and artificial magnetic conductor structures are usually used
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Patch antennas decreases the antenna efficiency due to excitation of surface waves on the substrate. In this work, a mushroom like Electromagnetic Bandgap Structures (EBGs) is designed and analyzed using Comsol Multiphysics. Five element microstrip patch antenna array on a uniform substrate has been employed that forms strong mutual coupling
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The conventional pyramidal horn antenna has been used for microwave applications for a very long time. Its gain can be increased by enlarging the construction of the horn to flare exponentially. This paper intends to present a method for gain enhancement of conventional pyramidal horn antenna in the frequency range
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In this paper, the authors use DGS (Defective Ground Surface) in MIMO (Multiple-Input and Multiple-Output) antenna to enhance the antenna performance parameter. The concept of DGS with MIMO antenna reduces antenna size and reduce mutual coupling between the antenna elements. It also enhances parameters such as gain, directivity, return loss
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The term Wireless Sensor Network (WSN) is nothing but collection of small sensor devices without any physical infrastructure used for communication. The communication in this network is done by radio frequencies and wireless routing. In WSN, data aggregation is main task which is used to collect information from sensor nodes
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In recent years, many routing protocols have been proposed to improve the lifetime, energy efficiency, deployment of nodes, latency, fault tolerance, robustness and reliability of Wireless Sensor Networks (WSNs). The energy constraints and prolonging the lifetime of the WSN is very important role of routing protocols. Different cluster based routing
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Now-a-days, extended number of wireless communication users has increasing demand of security and protecting data transmitted by the user over unsecured network so that unauthorized persons cannot access it. The data share through wireless network so it must provide data with authentication. The security between the wireless devices is most
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