Compensative methods of hindrances protecting in wireless local network
DOI №______
Abstract
To solve the problem of protecting the wireless network from interference, the sources of which are separated with the source of the useful signal, the method of amplitude compensation is developed. The levels of the useful signal are calculated taking into account the noise in the channels and the degree of compensation of interferences, depending on the magnitude of the angular diversity of the sources. With the unchanging spatial orientation of the antenna pattern, this dependence is considered for two cases. In the first case, the degree of compensation of interference is analysed at the unchanged position of its source and the displacement of the source of the useful signal. In the second case, the analysis of the degree of compensation of the interference in the direction of change (azimuth and angle of the place) of the arrival of the interference is conducted, when the reception of a useful signal is made at the maximum of the antenna direction diagram on the main channel. In the second case, the compensation is achieved by adjusting the transmission rates of the channels. At the same time, at low angular diversity of sources, the level of the useful signal is reduced in comparison with its nominal value. The results of the work can be used to select the most effective compensation regime.
Keywords: space-time signal processing, amplitude compensation, transmission coefficient, angular diversity of sources.
References
1. Vishnevskiy V. M., Lyakhov A. I., Portnoy S. L., Shakhnovich I.V. "Broadband wireless communication networks." Moskva: Tekhnosfera (2005) 592.
2. "Ad Hoc and Sensor Wireless Networks: Architectures, Algorithms and Protocol." Ed. by Hai Liu, Xiaowen Chu and Yiu-Wing Leung. Sharjah, United Arab Emirates. Bentham Science Publishersence Publishers (2017): 140.
3. Benslama M., Boucenna M. L., Batatia H. "Ad Hoc Networks Telecommunications and Game Theory." London SW19 4EU UK ISTE. Ltd John Wiley & Sons, Inc. 27-37 St George’s Road (2015): 141.
4. Zaruckiy V. O., Tolstikova O. V., Toroshanko O. S. "Energy saving technology of data transmission in the radiosensors network with mobile agents." Proceedings of the Military Institute of Taras Shevchenko National University of Kyiv 58 (2017): 11-16.
5. Vladimirov A. A., Gavrilenko K. V., Mikhaylovskiy A. A. "WiFi: "military" tricks of hacking and protecting wireless networks". Moskva:. NT Press (2005) – 463.
6. "Wireless WiFi network for office. Wireless Security." https://www.lankey.ru/svyaz/networksolutions/wifi/
7. Lazutkin B. A. "Radio equipment with interference compensation." Kyiv. Tekhnika (1972): 116.
8. Maksimov M. V. "Protection against radio interference." Moskva. Sov.radio (1976): 496.
9. Vakin S. A., Shustov L. N. "Fundamentals of radio interference and radio technical intelligence." Moskva: Sovetskoe radio (1968) – 448.
10. Shwets I. P. "Determination of number of radiants at compensation of hindrances in wireless local network." Telekomunikatsiini ta informatsiini tekhnolohii 3(56) (2017): 124-129/
11. Bakulin M. G., Varukina L.A., Kreindelin V. B. "MIMO technology: principles and algorithms." Moskva: Goryachaya Liniya-Telecom (2014): 242.
12. Paulraj A. J., Gore D. A., Nabar R. U., Bolcskei H. "An Overview of MIMO Communications – A Key to Gigabit Wireless." Proc. Of the IEEE 92(2) (February 2004): 198–218.
13. Czar`kov N. M. "Multichannel radar gauges." Moskva: Sovetskoe radio (1980): 192.
14. Varyuhin V. A. "Fundamentals of the theory of multichannel analysis." Kyiv: VA PVO SV (1993): 171.
15. Sigalov G. G., Yashuchin E. A., Markov L. N. "Questions of calculating radar tracking systems." Minsk (1969): 240.
