Calculation of radio energy of Wi-fi signal in the railway coach


  • A. A. Bezgin Sevastopol National Technical University, Sevastopol
  • A. A. Savochkin Sevastopol National Technical University, Sevastopol
  • A. A. Slobodeniuk Sevastopol National Technical University, Sevastopol



Wi-fi, rail transport, coaches, radio energy, 3G


Introduction. Access to the Internet through mobile networks 3G, compared with other systems, has considerably lower cost of the implementation, and the best speed characteristics that makes its use more efficient. Modern Wi-Fi router has multiple USB ports that enable to connect the additional 3G modems directly to them. The main part. For the organization of the wireless Internet access in the railway transport it is necessary to use Wi-Fi network in the rail coach. Users will connect to this network. To install the equipment we calculate radio energy of the channel. The level of Wi-Fi signal power increases by using several antennas spaced on the rail coach. The optimal distance between the outer antennas for standard rail coaches is 7 meters. In this case the minimum level of power in the free space is -35 dB. The operation of any user’s devices will be stable with such a high signal level. The calculations take into account the effect of the iron walls of the rail coaches, interference and loss RF cable. Conclusions. Calculation power of Wi-Fi signal is performed in a railway coach.

Author Biographies

A. A. Bezgin, Sevastopol National Technical University, Sevastopol

Bezgin A. A., student

A. A. Savochkin, Sevastopol National Technical University, Sevastopol

Savochkin A.A., Cand. of Sci.(Tech), Assoc. Prof.

A. A. Slobodeniuk, Sevastopol National Technical University, Sevastopol

Slobodeniuk A.A., student



Модель 61-4440: вагон пассажирский купейный [Электронный ресурс] / ОАО «ТВЗ». — Режим доступа: — 15.12.2012.

О компании Интертелеком [Электронный ресурс] / ООО «Интертелеком». — Режим доступа: http:// — 05.08.2012.

Методические указания по выполнению лабораторной работы «Исследование радиорелейной системы Ericsson MINI-LINK E» по дисциплине «Наземные и космические системы связи» для студентов 5-го курса специальности 7.09070101 — «Радиотехника» / Сост. А.А. Савочкин. — Севастополь: Изд-во СевНТУ, 2010. — С.21 — 23.


Model' 61-4440: vagon passazhirskij kupejnyj [Jelektronnyj resurs] / OAO «TVZ». — Rezhim dostupa: — 15.12.2012.

O kompanii Intertelekom [Jelektronnyj resurs] / OOO «Intertelekom». — Rezhim dostupa: http:// — 05.08.2012.

Metodicheskie ukazanija po vypolneniju laboratornoj raboty «Issledovanie radiorelejnoj sistemy Ericsson MINI-LINK E» po discipline «Nazemnye i kosmicheskie sistemy svjazi» dlja studentov 5-go kursa special'nosti 7.09070101 — «Radiotehnika» / Edit. A.A. Savochkin. — Sevastopol': Izd-vo SevNTU, 2010. — P.21 — 23.

How to Cite

Безгін, О., Савочкін, О. and Слободенюк, О. (2013) “Calculation of radio energy of Wi-fi signal in the railway coach”, Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, 0(54), pp. 61-67. doi: 10.20535/RADAP.2013.54.61-67.



Telecommunication, navigation, radar systems, radiooptics and electroacoustics