DMCA
akademischen Grades Doktor-Ingenieur (Dr.-Ing)
BibTeX
@MISC{Ilmenau_akademischengrades,
author = {Der Technischen Universität Ilmenau and Markus Landmann and Fachgebiet Elektronische Messtechnik},
title = {akademischen Grades Doktor-Ingenieur (Dr.-Ing)},
year = {}
}
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Abstract
This thesis deals with Experimental Channel Characterisation and its performance limits in real propagation environments. This includes recording of the multidimensional wideband channel matrix by using a Multiple-Input Multiple-Output (MIMO) channel sounder and antenna arrays at both sides of the link. High-resolution parameter estimation is finally applied to characterise the channel in terms of Direction of Departure (DoD), Direction of Arrival (DoA), Time Delay of 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 the measurement system used. The resulting estimation quality limits are investigated in detail by simulations and measurements. The entire processing chain is analysed in terms of possible error sources. To this end, measurement system impairments, antenna array calibration errors as well as limitations of the radio channel model applied by the high-resolution parameter estimation procedure are investigated. Moreover, consequences of using these results to deduce and parameterise geometry based channel models are demonstrated. Propagation measurements give us an antenna dependent description of the radio channel. For the
Keyphrases
akademischen grade doktor-ingenieur time delay radio channel model radio channel measurement system antenna dependent description entire processing chain channel model performance limit experimental channel characterisation real propagation environment possible error source several impairment high-resolution parameter estimation procedure practical antenna array measurement system impairment antenna array calibration error real world scenario multiple-input multiple-output complex polarimetric path weight antenna array propagation measurement high-resolution parameter estimation multidimensional wideband channel matrix estimation quality limit channel sounder
