Development of a mathematical model for estimating signal strength at the input of the 802.11 standard receiver

Authors

DOI:

https://doi.org/10.15587/1729-4061.2017.114191

Keywords:

wireless channel of the 802.11 standard, signal strength distribution, multipath wave propagation

Abstract

A mathematical model of the spatial estimation of signal strength at the input of the receiver for the 802.11 family of standards is proposed, for a central position of the access point in a room. This model allows the assessment of signal level at any point in the room, taking into consideration the maximum possible number of factors of influence. In addition, there is a confidence interval for such a model that makes it possible to estimate the level of signal fluctuations.

It was established that the level of signal fluctuations in a room is affected by such basic independent components as the signals, reflected from surfaces in the room, interference obstacles, and noise. In the frequency range of 2.4 GHz for the 802.11 standard, there occurs a rather non-uniform distribution of signals in a room with the creation of amplifying regions, as well as signal weakening, with a difference of up to 10 dbm, and under the most complicated conditions – up to 25 dbm.

It was found that the level of signal fluctuations depends on the quantity of simultaneously existing destabilizing factors in the channel for premises where there is a wireless network. Taking these factors into consideration is possible through direct assessment, using the algorithm of monitoring, at a distance of two meters from the radiating antenna of AP. This is the basis for spatial method of signal strength control for any premises in real time

Author Biographies

Dmytro Mykhalevskiy, Vinnytsia National Technical University Khmelnytske highway, 95, Vinnytsia, Ukraine, 21021

PhD, Associate Professor

Department of Telecommunication Systems and Television

Nikolay Vasylkivskyi, Vinnytsia National Technical University Khmelnytske highway, 95, Vinnytsia, Ukraine, 21021

PhD, Associate Professor

Department of Telecommunication Systems and Television

Oksana Horodetska, Vinnytsia National Technical University Khmelnytske highway, 95, Vinnytsia, Ukraine, 21021

PhD, Associate Professor

Department of Telecommunication Systems and Television

References

  1. Rose, K., Eldridge, S., Chapin, L. (2015). The internet of things: An overview. The Internet Society (ISOC), 1–50.
  2. Wescott, D. A., Coleman, D. D., Mackenzie, P., Miller, B. (2011). CWAP Certified Wireless Analysis Professional Official Study Guide: Exam PW0-270. Wiley Technology Pub., 712.
  3. Semenko, A. I. (2009). Suchasnyi stan stvorennia bezprovidnykh telekomunikatsiynykh system. Visn. Nats. un-tu "Lvivska politekhnika", 645, 56–67.
  4. Mykhalevskiy, D. (2017). Development of a spatial method for the estimation of signal strenth at the input of the 802.11 standard receiver. Eastern-European Journal of Enterprise Technologies, 4 (9 (88)), 29–36. doi: 10.15587/1729-4061.2017.106925
  5. Mykhalevskyi, D. V., Huz, M. D. (2015). Otsinka rozpodilu potuzhnosti syhnalu peredavacha standartu 802.11 u prymishchenni. Sbornik nauchnyh trudov Sword, 3 (1 (38)), 48–52.
  6. Internet of Things: Wireless Sensor Networks (2014). IEC White paper, 1–78.
  7. Andersson, M. (2015). Short range low power wireless devices and Internet of Things (IoT). U-blox AG White paper, 1–15.
  8. Li, M., Yang, B. (2006). A survey on topology issues in wireless sensor network. Proceedings of the international conference on wireless networks (ICWN’06), 1–7.
  9. Ding, N., Wagner, D., Chen, X., Hu, Y. C., Rice, A. (2013). Characterizing and modeling the impact of wireless signal strength on smartphone battery drain. ACM SIGMETRICS Performance Evaluation Review, 41 (1), 29–40. doi: 10.1145/2494232.2466586
  10. Foster, K. R. (2007). Radiofrequency exposure from wireless LANs utilizing Wi-Fi technology. Health Physics, 92 (3), 280–289. doi: 10.1097/01.hp.0000248117.74843.34
  11. Mykhalevskyi, D. V., Horodetska, O. S. (2015). Otsinka efektyvnoi shvydkosti peredachi informatsiy dlia simeistva standartiv 802.11kh u diapazoni 2.4 HHts. Sbornik nauchnyh trudov Sword, 3 (3 (40)), 43–47.
  12. Kichak, V., Bortnik, G., Yblonskiy, V. (2004). Discrete fourier transformation of the large implementations of signals. Modern Problems of Radio Engineering, Telecommunications and Computer Science. Proceedings of the International Conference TCSET'2004, 163–164.
  13. Kychak, V. M., Tromsyuk, V. D. (2017). Assessment Method of Parameters and Characteristics of Bit Errors. Journal of Automation and Information Sciences, 49 (5), 59–71. doi: 10.1615/jautomatinfscien.v49.i5.50
  14. Perahia, E., Stacey, R. (2013). Next Generation Wireless LANs: 802.11n and 802.11ac. Cambridge University Press, 480.
  15. Mykhalevskiy, D. V. (2014). Evaluation of wireless information transmission channel settings of 802.11 Wi-Fi standard. Eastern-European Journal of Enterprise Technologies, 6 (9 (72)), 22–25. doi: 10.15587/1729-4061.2014.31666
  16. Mykhalevskiy, D. V. (2016). Investigation of sensitivity impact of receiver to effective data transmission rate. Proceeding of the 1th IEEE International Conference on Data Stream Mining & Processing. Lviv, 369–372.
  17. Abilov, A. V. (2001). Rasprostranenie radiovoln v setyah podvizhnoy svyazi: Teoreticheskiy material i zadachi dlya prakticheskih zanyatiy. Izhevsk: Izd-vo IzhGTU, 24.
  18. Katin, S. V., Shorohova, E. A., Yashnov, V. A. (2013). Matematicheskaya model' ehlektromagnitnoy obstanovki vnutri ogranichennogo prostranstva. Trudy Nizhegorodskogo gosudarstvennogo tekhnicheskogo universiteta im. R. E. Alekseevayu, 1 (98), 18–27.

Downloads

Published

2017-11-07

How to Cite

Mykhalevskiy, D., Vasylkivskyi, N., & Horodetska, O. (2017). Development of a mathematical model for estimating signal strength at the input of the 802.11 standard receiver. Eastern-European Journal of Enterprise Technologies, 6(9 (90), 38–43. https://doi.org/10.15587/1729-4061.2017.114191

Issue

Section

Information and controlling system