Investigation of GSM Signal Variation Depending Weather Conditions

Abstract

Abstract-This work proposes a site attenuation method to calculate the intensity of the field received by a mobile phone on a two-lane highway. To validate the model, radio propagation measurement was carried out through the intercity connection highway of the City of Isparta. The measurement system consisted of live radio base stations transmitting at 900 MHz and 1800 MHz. Downlink signal strength level data were collected by using TEMS test mobile phones, and were analyzed by TEMS Investigation, MapInfo and Google earth. Transmitted power-into-antenna was 14 W for both 900 MHz and 1800 MHz. Both base station sectors are facing towards the same direction having a 14 dBi gain. A proposed approximation was compared with real data. The results indicate that wet white pine trees cause 3 dB to 6 dB extra loss at 1800 MHz and about 1 dB to 3 dB extra loss at 900 MHz. Although 1800 MHz transmitter is 10 m higher, it loses its advantage in signal strength at longer distances.

A Model for Transition Between Outdoor and Indoor Propagation

“…The measurement campaign was carried out during two weeks but in spite of the interruptions, as expected, due to the stationary nature of the field distribution inside the room, this lack of continuity becomes irrelevant. The measurement period was characterised by relatively dry and stable weather conditions [30].…”

EXPERIMENTAL INVESTIGATION OF GSM 900 MHz RESULTS OVER NORTHERN INDIA WITH AWAS ELECTROMAGNETIC CODE AND OTHER PREDICTION MODELS

“…Effect of wet forest on the deployment of Zigbee network has been investigated by Gay-Fernandez et al [22], and Helhel et al [23] investigated dry and wet earth effects on GSM 900&1800 MHz propagation in Turkey. Phaiboon and Phokharatkul [24] using modified Xia model investigated 900&1800 MHz measurements.…”

A Simple Method to Design a Compact and High Performance Dual-Band Bandpass Filter for GSM and Wlan

“…In recent year, there has been a growing interest in the wireless communication applications operating in multi-band, especially in the developed global system for mobile communications (GSM) or wireless local area networks (WLANs) [1,2]. Therefore, the high performance dual-band bandpass filters (BPFs) in different systems have become attractive and key components.…”