Algoritmo de determinación de una señal continua en la banda GSM 1900 a partir de una señal discreta, mediante procesamiento de datos, utilizando mediciones en los predios de la ESPOCH.

Abstract

The objective of this Curricular Integration work was to determine a continuous signal in the GSM 1900 band from a discrete signal, using the database measured during a week inside the ESPOCH, For this, the database of temporary measurements of the electric field intensity obtained in the continuous monitoring during a week from August 15 to 21, 2016 of the GSM 1900 frequency band inside the ESPOCH using the NARDA equipment was used. SRM-3000. Subsequently, the vectors of the daily average values of the electric field intensity E corresponding at each instant of time, during a week, were formed, determining the average of the discrete electric field signal. Then, the previous moving average with n=2 was used to perform the smoothing or filtering of the average signal of the discrete electric field intensity E. Next, the continuous signal in the GSM 1900 band was determined from the average signal of the discrete electric field intensity E by the Cubic Spline method. Finally, a comparative analysis was performed between the original signal (discrete points of the previous moving average n=2) and the continuous signal of the electric field intensity E ̅; and, for the presentation of the results, the MATLAB software was used, where it is verified that the filtered signal by means of the moving average does not lose its shape from the original signal, the continuous signal is similar to the discrete points of iteration 30 of the moving average, previous n=2. The results will be used for the determination of the specific absorption rate (SAR) in future investigations. The results will be used for the determination of the specific absorption rate (SAR) in future investigations. It is recommended not to exceed more than 30 passes of the moving average, since when this limit is exceeded, the changes in the smoothing of the signal are insignificant.