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Effectiveness Analysis of the Method of Measuring the Parameters of Network Elements and Signals in the Conditions of Concentrated Interference Spectrum

The measurement method of network elements and communication signals parameters in the conditions of the extraneous signals is developed. The possibility of using adaptive noise compensators in mobile network parameters is considered. In adaptive noise compensators, a reference signal is generated in a reference reception channel without the desired signal. Deleting the desired signal from the reference receiving channel is a problem, especially in a mobile network. In an actual situation, in the mobile network, installing the antenna of the reference channel of the reception in the right way is hardly possible. In addition, the direction of arrival of the reference signal can constantly be changing, which requires adjusting the zero pattern of the antenna of the reference reception channel in the direction of its arrival in real-time. To solve the problem of adaptive interference compensation, it is necessary to find such technical solutions that all these actions for the organization of the reference channel of reception are as simple as possible, formalized, and automated. The work proposes using an elemental adaptive antenna array in the reference receiving channel N. Using mathematical modeling in the MATLAB environment, the efficiency of removing the reference signal from the reference reception channel was analyzed. As a criterion for the effectiveness of the adaptive antenna array in the reference receiving channel, the traditional indicator of spatial-temporal processing, namely the SNR ratio of the reference signal levels to the sum of the levels of interference and noise, is taken. The dependences of the SNR in the reference receiving channel on the interference power level were obtained. The analysis showed that with the help of a 3-element AAA, it is possible to reduce the reference signal level in the reference channel of the adaptive interference compensator by 28 dB. The dependence of the SNR in the reference receiving channel on the number of antenna elements was obtained. The analysis showed that the SNR in the reference receiving channel decreases linearly with an increase in the number of antenna elements. That is, it can be concluded that the more antenna elements the reference receiving channel contains, the more effectively the reference signal is removed in the reference receiving channel of the adaptive interference compensator.