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Author:Koivunen, Jukka
Title:Characterisation of MIMO Propagation Channel in Multi-Link Scenarios
MIMO-etenemiskanavan karakterisointi usean MIMO-linkin tapauksessa
Publication type:Master's thesis
Publication year:2007
Pages:67      Language:   eng
Department/School:Sähkö- ja tietoliikennetekniikan osasto
Main subject:Radiotekniikka   (S-26)
Supervisor:Vainikainen, Pertti
Instructor:Kolmonen, Veli-Matti
Electronic version URL: http://urn.fi/urn:nbn:fi:tkk-010162
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark S80     | Archive
Keywords:MIMO
multi-link
measurements
interference
radiowave propagation
MIMO
moniyhteys
kanavamittaukset
häiriöt
radioaaltojen eteneminen
Abstract (eng):In this master's thesis a measurement system for dynamic wideband double directional multi-link MIMO propagation measurements at 5.3 GHz was developed.
The system is able to measure two 32x32 MIMO channels simultaneously with maximum doppler frequency of 11.73 Hz.
Two measurement campaigns using this system were conducted, and measurement data from the campaigns were analyzed to verify the correct operation of the system.

The literal part of the work begun with a literature review on existing MIMO channel models and MIMO channel sounding measurements.
In this survey it was seen that no dynamic MIMO multi-link measurements have been performed previously.
Also the basics of the MIMO systems and MIMO propagation channel measurement technigues were studied.

The possible configurations for measuring the multi-link MIMO channel were considered and a system based on two existing channel sounding equipment was presented.
The interoperability of the sounders was made possible with some system modifications done to the TKK sounder.

Finally it was shown that the measurement system is able to produce impulse responses of MIMO propagation channel in multi-link scenarios, and so the measurement system can be used for simultaneous measurements of dynamic multi-link MIMO channels and the data of the measurement campaigns conducted as a part of this thesis can be used for analyzing this kind of channels.
Abstract (fin):Tässä diplomityössä kehitettiin mittausjärjestelmä dynaamisen laajakaistaisen moniyhteyksisen MIMO-etenemiskanavan mittaamiseen 5.3 GHz:n taajuusalueella.
Järjestelmä kykenee mittaamaan yhtaikaisesti kaksi 32x32 MIMO kanavaa, joissa maksimidoplertaajuus on 11.73 Hz.
Työn puitteissa järjestettiin kaksi mittauskampanjaa joista saatua mittausdataa käytettiin järjestelmän testaamiseen ja kehittämiseen.

Työn kirjallinen osuus aloitettiin kirjallisuuskatsauksella olemassaolevista MIMO-kanavamalleista ja MIMO-kanavamittauksista.
Kirjallisuuskatsauksen tuloksena huomattiin ettei aiemmin ole suoritettu moniyhteyksisen MIMO-kanavan mittauksia.
Myös MIMO-järjestelmän perusperiaatteisiin ja MIMO-kanavaluotaustekniikoihin tutustuttiin.

Eri mahdollisuuksia moniyhteyksisen MIMO-kanavan mittaamiseen pohdittiin ja työssä kehitettiin kahden kanavaluotaimen yhteiskäyttöön perustuva mittausjärjestelmä.
Jotta järjestelmä saatiin toimimaan, täytyi TKK:n kanavaluotaimeen tehdä muutamia muutoksia.

Lopuksi työssä esitettiin mittauskampanjoiden tuloksia, joiden perusteella voidaan sanoa, että järjestelmä kykenee mittaamaan moniyhteyksisen MIMO-kanavan impulssivasteet, ja siten mittausjärjestelmää voidaan käyttää moniyhteyksisen MIMO-kanavan mittaamiseen ja työn puitteissa järjestettyjen mittauskampanjoiden tuloksia tällaisten etenemiskanavien analysointiin.
ED:2008-02-11
INSSI record number: 35260
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