![]() The results of calculation are verified by the computer simulation of traffic process in the GSM cell. When the offered traffic and, as the result, call loss increase, the increase of output power becomes less. If offered traffic is small, the increase of output power is equal to the part of intracell traffic. It is proved that intracell traffic increases this power. Influence of Intra- cell Traffic on the Output Power of Base Station in GSMĭirectory of Open Access Journals (Sweden)įull Text Available In this paper we analyze the influence of intracell traffic in a GSM cell on the base station output power. to smart meters) in the order of 104 devices. We show that a single GSM cell can support simultaneous low-data rate connections (e. We propose different schemes to boost the number of M2M devices in the system without affecting. In order to enable M2M-dedicated operation in the near future, we reengineer the GSM/GPRS/EDGE protocol in a way that requires only minor software updates of the protocol stack. In this paper we assess the potential of GSM/GPRS/EDGE to operate as a dedicated network. On the other hand, GSM is a well-adopted technology and represents a valuable asset to build M2M infrastructure due to the good coverage, device maturity, and low cost. Madueño, Germán Corrales Stefanovic, Cedomir Popovski, PetarĬonnectivity serving all types of wireless traffic. How Many Smart Meters can be Deployed in a GSM cell? In addition, applied GSM modulated RF radiation demonstrate bigger influence on proliferation of cells. Both applied RF fields have shown similar effect on cell culture growth, and cell viability of V79 cell line. Viability of GSM and CW exposed cells did not significantly differ from matched control cell samples. CW exposed cell samples showed significant decrease after 3 hours of exposure on the third post-exposure day. ![]() In comparison to control cell samples, proliferation of GSM irradiated cells showed significant decrease after 3 hours of exposure on the second and third post-exposure day. Trypan blue exclusion test was used to determine cell viability. Cell proliferation was determined by cell counts for each hour of exposure during five post-exposure days. V79 samples were plated in concentration of 1x10 4 cells/mL. Average specific absorption rate (SAR) was calculated to be for GSM 0.23 W/kg and for CW 0.12 W/kg. Electric field strength for cells exposed to GSM modulation was set at 10 V/m and for CW exposed cells was 8.2 V/m. Previously prepared samples of cells in culture were exposed for 1, 2 and 3 hours both to 915 MHz GSM modulated and to 935 MHz CW RF field in gigahertz transversal electromagnetic mode cell (GTEM- cell). The aim of our study was to evaluate and compare effect of global system of mobile ( GSM) modulation and continuous wave (CW) radiofrequency radiation (RF) on proliferation ability and viability of V79 Chinese hamster lung cells. International Nuclear Information System (INIS) ![]() (author)Ĭomparison of GSM Modulated and CW Radiofrequency Radiation on Cells The calculations were performed using a numerical program based on the electromagnetic field theory and the method of moments. The analysis concerned the current that flows to the transformer station through AC power mains, the potential difference between the grounding systems of the GSM and the transformer stations and the voltage differences between phase and PE conductors of the power mains underground cable at both the GSM and the transformer sides. Direct lightning strike to GSM tower was studied. Markowska, Renata, E-mail: paper presents the results of numerical calculations of lightning surge currents and voltages in the low voltage power mains system connected to a free standing GSM base station. Surge currents and voltages at the low voltage power mains during lightning strike to a GSM towerĮnergy Technology Data Exchange (ETDEWEB)
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