інтерференція

The Impact of Bluetooth Low Energy Interference and MU-MIMO Technology on Wi-Fi 5 Network Performance

The mutual influence of Bluetooth Low Energy (BLE) and Wi-Fi 5 technologies in the 2.4 GHz band was investigated, along with an assessment of MU-MIMO technology effectiveness under such interaction. Experimental measurements of key network performance indicators, such as TCP throughput and connection stability, were conducted for various wireless channel configurations. It was established that BLE activity predominantly negatively affects Wi-Fi parameters. The dependency of interference levels on Wi-Fi channel selection and channel width was analyzed.

Features of Building Wireless Computer Networks to Increase Noise Immunity

The paper analyzes existing types of wireless computer networks, technologies, standards, and potential types of interference. Based on this analysis, a classification of wireless information transmission methods has been proposed, taking into account their parameters and task specificity. The primary issues affecting interference resistance in wireless networks have been highlighted. Technical features, advantages, and limitations of each type have been examined, along with their suitability for various scenarios and operational environments.

Comparative analysis of interference, noise and losses in the mobile communication systems in millimeter wave range

The article analyzes the approaches to the mathematical modeling of mobile systems in the millimeter wave range. The architecture of a mobile network using Radio over Fiber (RoF) technology is considered which is proposed for forming and transmitting the millimeter-wave signals via fiber-optic communication lines. The noise of the optical heterodyne used for the formation of radio signals is analyzed.

Synthetic frequency characteristics of near-surface layers under the seismic stations Trosnyk, Uzhgorod, and Mizhgirya

Purpose. In order to quantitatively estimate the dynamic effects of velocity structure under the three seismic stations of the Carpathian network spectral ratios between horizontal and vertical components of displacements on the free surface (frequency characteristics) depending only on parameters of the medium and defining its resonance properties have been calculated using the algorithm designed based on matrix method and the models constructed using the data of drilling in near surface layers. Methodology.

Synthetic and experimental frequency characteristics of near-surface layers under the seismic stations Trosnyk, Uzhgorod, and Mizhgirya

Purpose. In the paper, experimental spectral ratios between horizontal and vertical components of displacements from local earthquakes and noise recorded at the stations Uzhgorod, Trosnyk and Mizhgirya (frequency characteristics of the medium under the stations) are compared to synthetic ratios calculated using the velocity models built based on the data of drilling in near-surface layers; correlation between the resonance frequencies is evaluated, as well as the applicability of experimental and synthetic frequency characteristics in the regional seismological investigations. Methodology.