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GSM communication base station electromagnetic radiation prediction method

A communication base station and electromagnetic radiation technology, applied in wireless communication, electrical components, etc., can solve the problem of large deviation between theoretical prediction and actual test of electromagnetic radiation of GSM communication base station, achieve accurate prediction of electromagnetic radiation, reduce dangerous accidents, and improve accuracy sexual effect

Inactive Publication Date: 2014-06-18
XIANGTAN UNIV
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Problems solved by technology

[0003] In order to solve the problem of large deviation between theoretical prediction and actual test of electromagnetic radiation of GSM communication base stations, the present invention provides a method for predicting electromagnetic radiation of GSM communication base stations with high accuracy and low cost

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  • GSM communication base station electromagnetic radiation prediction method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] The system principle block diagram of technical scheme of the present invention is as figure 1 As shown, the specific steps are:

[0035] 1) By calculating the power spectral density of the pulse signal transmitted by the GSM communication base station, the expression of the transmission power of the GSM communication base station is obtained.

[0036] The pulse signal transmitted by the GSM communication base station is modulated by ASK. Where s(t) is the baseband pulse signal. In the case of a single carrier frequency, the probability of each user occupying the pulse is P, then the probability of not occupying the pulse is (1-P), and the occupancy of each pulse is independent of each other. It can be expressed in mathematical expression as

[0037] ζ ( t ) = ...

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Abstract

The invention discloses a GSM communication base station electromagnetic radiation prediction method. The method includes the followings steps that a transmitting power expression of a communication base station is obtained by calculating GSM communication base station pulse signal power spectral density; telephone traffic data of the communication base station are obtained to obtain telephone traffic data of different moments and a communication base station signal pulse flow density mean value; the communication base station signal pulse flow density mean value is put into the transmitting power expression, and transmitting power of the communication base station at different moments is solved; the obtained transmitting power is combined with an antenna gain direction picture, and equivalent transmitting power at different moments in different directions is obtained; the obtained equivalent transmitting power of the GSM communication base station is put into an Friis transmission equation, and accordingly the magnitude of electromagnetic radiation of different distances at different moments in different directions is obtained. According to the method, the GSM communication base station signal pulse flow density mean value and an antenna gain direction function are combined to be used in the communication base station electromagnetic radiation prediction method, and prediction accuracy of the electromagnetic radiation of the communication base station is improved.

Description

technical field [0001] The invention relates to a method for predicting electromagnetic radiation of a GSM communication base station. Background technique [0002] With the rapid development of the mobile communication industry and the rapid expansion of the user scale, the mobile communication base stations are scattered all over the world, the electromagnetic radiation in space is getting stronger and stronger, and the number of people exposed to strong electromagnetic fields and electromagnetic wave radiation is increasing. How to qualitatively and quantitatively determine electromagnetic radiation? The impact of pollution on the human body has become the most urgent problem to be solved at present. The electromagnetic radiation prediction of GSM communication base station mainly depends on three parts: the transmission power of the communication base station, the distance between people and the communication base station, and the orientation of the prediction point and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00
Inventor 杨万春何晴晴胡艳霞冯俨一
Owner XIANGTAN UNIV
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