Dimenzioniranje radijskog sučelja za dugoročnu evoluciju mobilnih sustava treće generacije

scientific master's theses

• Title (english): LTE Radio Interface for 3G Wireless Mobile Systems
• Author: Tomislav Blajić
• Mentor: Dina Šimunić (mentor)
• Committee member: Dina Šimunić (predsjednik povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Communication and Space Technologies); Zagreb
• Defense date and country: 2011-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Telecommunications and Informatics
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Nakon uvođenja brzog paketskog pristupa (HSPA), slijedeći veliki korak u daljnjoj evoluciji mobilnih sustava treće generacije poznat je pod nazivom dugoročna evolucija 3G sustava (3G Long Term Evolution, 3G LTE). Ovaj rad objašnjava što potiče tu evoluciju, uz osvrt na potrebe korisnika usluga, zahtjeve za povećanim kapacitetom mreža, ograničenja današnje tehnologije kao i normizacijske aktivnosti unutar 3GPP-a. Uz kratki prikaz evolucije arhitekture sustava, poseban naglasak dan je na fizički sloj LTE sustava, uključujući detalje oko strukture kanala, OFDM modulacije, višestrukog pristupa u silaznoj (OFDMA) i uzlaznoj svezi (SC-FDMA), te korištenja MIMO antenskih tehnika. Osnovnu tema rada predstavlja dimenzioniranje LTE radijskog sučelja. Objašnjene su glavne karakteristike širokopojasnog radijskog kanala, definiran je proračun veze, te prikazana metoda proračuna pokrivanja i kapaciteta LTE sustava u silaznoj i uzlaznoj vezi. Usporedbom rezultata LTE i HSPA dimenzioniranja prikazan je potencijal koji pružaju ovi evolucijski koraci u razvoju 3G sustava i njihovoj ulozi osnovnih tehnologija za pružanje usluga mobilnog širokopojasnog pristupa.

Abstract (english)

After implementation of High Speed Packet Access (HSPA), next big step in further evolution of 3rd generation mobile systems (3G) is known as Long Term Evolution (LTE). This thesis explains main drivers for this evolution, giving an overview on end user demands, network demands for increased capacity, limitations of today's technologies as well as standardization activities in 3GPP. An overview of System Architecture Evolution (SAE) is followed by detailed description of LTE physical layer, with an emphasis on channel structure, OFDM modulation, multiple access techniques used both in downlink (OFDMA) and uplink (SC-FDMA) and on applied multi-layered antenna techniques (MIMO). Main topic of this thesis is LTE radio interface dimensioning. Main characteristics of the wideband radio channel are explained and link budget is defined. A method for the LTE downlink and uplink coverage and capacity calculations is presented. Results of LTE and HSPA dimensioning are compared, illustrating the potential of new evolution steps in development of 3G system and their role as the main technologies for providing mobile broadband services.

• Keywords: LTE; SAE; HSPA; 3GPP normizacija; mobilni širokopojasni pristup; zračno sučelje; OFDM; SC-FDMA; MIMO; dimenzioniranje
• Keywords (english): LTE; SAE; HSPA; 3GPP standardization; Mobile Broadband; air interface; OFDM; SC-FDMA; MIMO; dimensioning
• Language: croatian
• URN:NBN: urn:nbn:hr:168:742865
• Project: Number: 036-0363081-1649; Title: Istraživanje povećanja učinkovitosti bežičnih komunikacijskih sustava; Leader: Dina Šimunić; Jurisdiction: Croatia; Funder: MZOS; Funding stream: ZP
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Catalog URL: http://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=37289
• Type of resource: Text
• Extent: 129 str. ; 30 cm.
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-07-10 08:05:48