Mjerenje parametara bežičnih komunikacija pomoću Android aplikacije

undergraduate thesis

• Title (english): Wireless communication parameter measuring using Android application
• Author: Ivana Perčinlić
• Mentor: Krešimir Malarić (mentor)
• Committee member: Krešimir Malarić (predsjednik povjerenstva)
• Committee member: Tomislav Grgić (član povjerenstva)
• Committee member: Valter Vasić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2014-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Ovim završnim radom pokriveno je područje mjerenja parametara Wi-Fi mreža i GSM tehnologije. Rad sadrži teoretsku podlogu o Wi-Fi tehnologiji, počevši općenito od razvoja bežičnih tehnologija, 802.11 normi za bežične mreže, tehnika kodiranja i modulacija kod bežičnih mreža te prednosti i nedostataka bežične mreže.
Teoretski dio GSM tehnologije sadrži arhitekturu sustava, ćelijski koncept i način rada baznih postaja.
Opisan je i mjerni uređaj s kojim su obavljana mjerenja te korištene Android aplikacije koje su korištene za mjerenje razine signala i brzine prijenosa podataka
U radu je izvedeno 5 različitih tipova mjerenja, od kojih su 4 bila vezana za WiFi tehnologiju ( pokazan je utjecaj raznih čimbenika poput udaljenosti, različitih ometajućih zračenja i interferencija, zidova) a jedno je vezano za GSM tehnologiju (utjecaj udaljenosti na razinu signala).

Dana je detaljna analiza rezultata mjerenja i rezultati su uspoređeni sa proračunatim vrijednostima.

Abstract (english)

This thesis covered the measurement area of WiFi networks and GSM technology.

The paper contains a theoretical background of the Wi-Fi technology, starting from the evolution of wireless network, 802.11 standards for wireless networks, the technique of coding and modulation for wireless networks, up to the advantages and disadvantages of wireless networks.
Theoretical part of GSM technology contains informations about the architecure, cell concept and mobile signal strength.

The measuring device and also mobile applications based on the Android operating system were described in details. The measuring device and measurement applications were used to measure the signal strength and data speeds. The total of 5 different types of measurements were conducted, 4 for WiFi( which showed the influence of various factors on the measured parameters, such as distance, peoples, walls and Bluetooth devices) and one for GSM (showing effect of distance for the signal).

A detailed analysis of the measurement results has been given and it is compared to expected results.

• Keywords: Wi-Fi; GSM; pametni telefon Sony Experia Z1; 802.11 norme; Android aplikacija; razina bežičnog signala; silazna i uzlazna brzina veze; bazna postaja; algoritmi za prekapčanje
• Keywords (english): Wi-Fi; GSM; smartphone Sony Xperia Z1; 802.11 standards; Android application; signal strength; data link speed; base station; handover algorithms
• Language: croatian
• URN:NBN: urn:nbn:hr:168:677206
• Study programme: Title: Computing; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-05 17:49:09