Limitations of experimental channel characterisation [Elektronische Ressource] / Markus Landmann

TECHNISCHE UNIVERSITÄT ILMENAUFakult¨at fu¨r Elektrotechnik und Informationstechnikder Technischen Universitat Ilmenau¨Limitations of ExperimentalChannel CharacterisationMarkus LandmannDissertation zur Erlangung desakademischen Grades Doktor-Ingenieur (Dr.-Ing)Anfertigung im: Fachgebiet Elektronische MesstechnikInstitut fu¨r InformationstechnikFakultat fur Elektrotechnik und Informationstechnik¨ ¨Gutachter: Univ.-Prof. Dr.-Ing. habil. Reiner S. Thoma¨Univ.-Prof. Dr. rer. nat. habil. Matthias Heino.Univ.-Prof. Jun-ichi TakadaVorgelegt am: 11.12.07Verteidigt am: 28.03.08urn:nbn:de:gbv:ilm1-2008000090ABSTRACTThis thesis deals with Experimental Channel Characterisation and its performance limits in realpropagation environments. This includes recording of the multidimensional wideband channelmatrix by using a Multiple-Input Multiple-Output (MIMO) channel sounder and antenna arraysat both sides of the link. High-resolution parameter estimation is finally applied to characterisethe channel in terms of Direction of Departure (DoD), Direction of Arrival (DoA), Time Delayof Arrival (TDoA), and complex polarimetric path weights. The quality of these estimates in“real world”scenarios is degraded by several impairments of the practical antenna arrays and themeasurement system used. The resulting estimation quality limits are investigated in detail bysimulations and measurements. The entire processing chain is analysed in terms of possible errorsources.