Uporaba komunikacije z vidno svetlobo v sodobnih komunikacijskih sistemih : diplomsko delo

Pušelc, Žiga (author), Batagelj, Boštjan (mentor), Vuk Baliž, Kristjan (co-mentor)

Diplomsko delo opisuje razvoj komunikacij z vidno svetlobo in možnost implementacije takšnega sistema v naš vsakdan. Opisano je delovanje in potek komunikacije preko vidne svetlobe ter kako iz te svetlobe dobimo podatke na sprejemni strani. Namen naloge je predstavitev delovanja komunikacije in izračunov zanesljivosti komunikacije v različnih pogojih. Prav tako je namen testiranje prototipa povezave s po eno svetlečo diodo na oddajni in sprejemni strani. V delu so najprej opisane osnovne značilnosti komunikacij z vidno svetlobo in razlogi ter potrebe za njihovo uporabo. Omenjene so tudi prednosti, zaradi katerih je tovrstna izvedba komunikacij zelo primerna za vsakdanjo uporabo. Sledi opis in prikaz koncepta ter nato arhitekture komunikacij z vidno svetlobo. Nadalje sta primerjani tehnologiji brezvrvičnega prenosa podatkov Wi-Fi in Li-Fi, pri čemer Li-Fi za prenos podatkov uporablja vidno svetlobo namesto radijskih valov. V zadnjem delu se diplomska naloga usmeri v opis uporabe komunikacij z vidno svetlobo ter kako se lahko uporabi in koristi v novejših sistemih, kot je tehnologija 5G. Po opisu teoretičnega dela komunikacij z vidno svetlobo se diplomsko delo posveti teoretičnim izračunom delovanja komunikacije v različnih pogojih, kot so povečevanje moči na oddajni strani in spreminjanje oddaljenosti sprejemnika od oddajnika. Na grafih so prikazani rezultati primerjave za primere sprejemne moči signala, če se v oddajniku uporabi usmerjeno svetilo ali izotropno svetilo. Ob koncu naloge je predstavljen še praktični prototip komunikacije, kjer se na oddajni strani uporabi ena svetleča dioda, na drugi strani pa se signal sprejema z drugo svetlečo diodo. Namen je preizkus delovanja, kjer se uporabi čim manjše število elektronskih gradnikov.

• Language: Slovenian
• Keywords: VLC, optične komunikacije, mobilna omrežja, LED, vidna svetloba
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Place of publishing: Ljubljana
• Publisher: [Ž. Pušelc]
• Year: 2021
• Number of pages: 66 str.
• PID: 20.500.12556/RUL-127707
• UDC: 621.39(043.2)
• COBISS.SI-ID: 68098563
• Publication date in RUL: 21.06.2021

Secondary language

• Language: English
• Title: The use of visible light communication in modern communication systems : visokošolski strokovni študijski program prve stopnje Aplikativna elektrotehnika

Abstract

The bachelor’s thesis describes the development of communications with visible light and the possibility of implementing such a system in our everyday life. The operation and course of communication via visible light and how we obtain data on the receiving page from this light are also described. The purpose of the task is to present the operation of communication and calculate the reliability of communication in different conditions. It is also intended to test a prototype connection with one LED on each of the transmitting and receiving sides. The paper first describes the basic characteristics of communications with visible light and the reasons and needs for their use. It also mentions the advantages that make this type of communication very suitable for everyday use. This is followed by a description and presentation of the concept and then the architecture of visible light communications. Wi-Fi and Li-Fi wireless technologies are further compared with Li-Fi using visible light instead of radio waves to transmit data. In the last part, the bachelor’s thesis focuses on the description of the use of communications with visible light and how it can be used in newer systems, such as the 5G technology. After describing the theoretical part of communications with visible light, the thesis focuses on the theoretical calculations of capabilities of communication in various conditions, such as increasing the power on the transmitting side and changing the distance of the receiver from the transmitter. The graphs show the results of the comparison for examples of signal reception power if a directional lamp or an isotropic lamp is used in the transmitter. At the end of the task, a practical prototype of communication is presented, where a light-emitting diode is used on the transmitting side and the signal is received with another light-emitting diode on the other side. The purpose is a performance test where as few electronic building blocks as possible are used.

• Keywords: VLC, optical communications, mobile networks, LED, visible light