Measurement and Comparison of Signal Levels of GSM900, GSM1800 and UMTS Bands

Year 2016, Special Issue (2016), 142 - 144, 01.12.2016

Mustafa Cansız Teymuraz Abbasov M.Bahattin Kurt A.Recai Celık

Abstract

 Signal levels of GSM900, GSM1800 and UMTS bands were measured as mobile
on the main streets in the city center of Diyarbakır at the same time and route
during a week. The measurements were performed by using high precision and
portable spectrum analyzer with an isotropic electric field antenna and a
laptop. The high precision spectrum analyzer is a device that measures the high
frequency electromagnetic fields. The isotropic electric field antenna allows a
three axis measurements. The laptop was used to record and analyze the
measurement samples. Electric field strengths were measured as signal levels in
this study. Some statistical parameters such as standard deviation and variance
were calculated with 95% confidence interval for measurement samples. The
highest signal levels were measured as 3.8580 V/m for GSM 900 band, 2.9440 V/m
for GSM1800 band and 6.0900 V/m for UMTS band during a week. Similarly, mean
electric field strength values as average signal levels were calculated as
0.4985 V/m for GSM 900 band, 0.2350 V/m for GSM1800 band and 0.6281 V/m for
UMTS band. According to the mean electric field strength values, the average
signal levels of three bands were ranked as UMTS, GSM900 and GSM1800 from the
largest to the smallest, respectively. The highest variation in standard
deviation and variance was observed on Wednesday for GSM900 and UMTS bands and
Thursday for GSM1800 band.

Keywords

Signal level, Electric field strength, GSM, UMTS, Statistics

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