IEEE 802.16 is a Broadband Wireless Access (BWA) network and thus it is considered to be an alternative solution to wired broadband technologies. Relay station plays a promising role of extending the range of Base station for long distances in WiMAX networks. Relay station is suitable to areas with limited infrastructure such as rural, hilly and lakes, where it is difficult to install many Base...

nowadays, undoubted access to up to date with high spatial resolution and low temporal resolution of meteorological parameters is a one of the necessary needs for meteorological science researches. in order to doing this research have been used the different daily, monthly and yearly iran precipitation from global and regional data base of gpcpøŒ gpccøŒ aphrodit v101 0.25øŒ aphrodit v101 0.5 ùˆ...

Wireless sensor networks (WSNs) have shown great potential for serving a full spectrum of applications in a wide variety of environments. Of special interests are applications that operate in hostile setups such as combat zones and territorial border. These applications are categorized with the presence of adversaries who are eager to attack the network. The most effective approach for an adver...

introduction: over the last decade, exposure to non-ionizing electromagnetic waves due to base station antenna has increased. this in vivo study was planned for evaluating the effects of whole-body exposure to 950 mhz field of gsm mobile phone system on rat dentate gyrus long-term potentiation. materials and methods: 24 naive male wistar rats (3 month old, 225|¡|25 g) were randomly divided in t...

Paper proposes a new design and a simulation model for the pico base station based on IEEE 802.16e standard and evaluates its performance in a mutihop-relay and mesh networks. The proposed base station design allows multihoprelay communications and thus opens a possibility for the proposed base station to be an element of mesh networks. The conventional IEEE 802.16e base stations interconnected...

We propose in this paper a computationally efficient security scheme for identifying network members in wireless sensor networks. The authentication process is done by first identifying the base station as being the authentic one with the use of fingerprinting information. Once the base station is authenticated, the others members of the network can then be authenticated by the base station. Th...

Late advances in the computerized genuine astute system (CPSG) have engaged a wide extent of new contraptions reliant upon information and correspondence development (ICT). Regardless, these ICT-enabled are feeble to creating risk attacks. This paper plays out serious review top tier security system. By focusing on real layer CPSG, this gives distracted bound together state-space model, which a...

The Faculty of Electrical Engineering and Communication of the Brno University of Technology offers several subjects focused on mobile communication networks. For practical exercises the experimental mobile network has been building at our faculty. As we do not have OMC or NMC in our network and as the low level network management is quite complex we designed the software that is useful tool fo...

Wireless sensor networks are often constructed as asymmetric networks comprised of a large number of small, resource-constrained sensor nodes and a small number of relatively powerful base stations. A base station is vulnerable as a central point of failure in such networks. Typical packet traffic in a sensor network reveals pronounced patterns that allow an adversary analyzing packet traffic t...