PENGUATAN SINYAL GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) 900 MHz MENGGUNAKAN ANTENA GRID
نویسندگان
چکیده
منابع مشابه
Comparison of bioactivity between GSM 900 MHz and DCS 1800 MHz mobile telephony radiation.
An increasing number of studies find that pulsed Radio Frequency (RF), electromagnetic radiation of both systems of digital mobile telephony, established and commonly used in Europe during the last years, GSM 900 MHz (Global System for Mobile telecommunications) and DCS 1800 MHz (Digital Cellular System), exert intense biological action on different organisms and cells (Hardell et al., 2006; Hy...
متن کاملInduction of apoptosis by 900 MHz radiofrequency radiation emitted from a GSM mobile phone simulator in bystander Jurkat cells
Background: Radiation-induced bystander effect is a response which results in damage in non-irradiated cells in response to signals from the irradiated cells. The aim of the present study was to investigate microwave-induced bystander effect from a GSM mobile phone simulator on induction of apoptosis in Jurkat cell line. Materials and Methods: Jurkat cells were divided into three groups of non-...
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This paper describes the early history of GSM, who founded it, and why it was founded. Some services of GSM will be described like SMS, and the emergency call service. The network layout of GSM, and the layers of the protocol will also be described. Introduction GSM was conceived in the early 1980’s by the study group: Groupe Spécial Mobile. GSM had some ambitious goals, some were met, and some...
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The objective of this proposed paper is to present an extensive simple study about the mobile Location and the technologies that can enable them in conventional GSM networks, which do not require any significant changes to the network or the mobile device itself. A set of cell-based positioning techniques are proposed based on information available from the network and on accurate path loss mod...
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For the cellular networks to effectively cover a terrain or environment, accurate prediction of the coverage of the radio frequency signal is highly needed. Wave propagation models are essential and very important tools for determining the wave propagation characteristics for a particular environment. Path loss predictions are therefore required for the coverage planning, determination of multi...
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ژورنال
عنوان ژورنال: Elektron : Jurnal Ilmiah
سال: 2013
ISSN: 2654-4733,2085-6989
DOI: 10.30630/eji.5.1.48