Abstract
This study describes a time domain channel sounder based on binary sequences. The channel sounder system consists of several off-the-shelf laboratory instruments and is controlled by a PC. The frequency band of interest is the unlicensed millimetre wave band, 57–64 GHz. A crucial feature of the proposed system is its fast measurement speed enabling measurements of realistic vehicular scenarios. The main part of the study is dedicated to the description and analysis of the system behaviour when nonlinear components, such as mixers, low noise amplifiers or power amplifiers are used. The contributions of this study are the description of how to mitigate these effects utilising several different excitation signals and the evaluation and comparison of the channel sounder performance in terms of the spurious-free dynamic range parameter.
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