Modeling and analyzing of UV channels characteristics in various configuration of transmitters and receivers for building manet

Abstract

Mobile Ad-Hoc Networks (MANET) provide operation in the absence of traditional telecommunications infrastructure, which makes such networks indispensable in the context of military operations, search and rescue operations, the elimination of emergency situations and other responsible and dangerous objects. The high value of ultraviolet (UV) communication networks and systems in the UV-C range of 200-280 nm is determined by a number of key features. They are nonsusceptible to electronic warfare, solar radiation, and the ability to secure data transmission in a non-line-of-sight mode (NLOS). These advantages determine the perspectivity use of MANET networks with a UV channel. For reliable operation of such networks, it is necessary to ensure reliable communication in all possible directions, which is caused by the constant movement of subscribers in a wide area. The solution is to use grids of emitters and receivers with various configurations. Based on the modified Monte Carlo algorithm, the characteristics of the UV channels were simulated using flat and sector grids of transmitters and receivers. It has been established that increasing the opening angle of the transmitters and receivers grids in azimuth to 20 or 40 degrees makes it possible to significantly smooth the loss dependence on the network nodes azimuths, which is necessary for reliable communication with subscribers in all possible directions. In this case, when changing the range and other angular parameters of the channel the loss values do not increase much (less than 10 dB). Indicated promising areas of development studies to optimize the antenna array configurations for specific conditions and operation of MANET routing protocol parameters for transmitting data through intermediate nodes when the requested node is unavailable because of the large UV channel attenuation.