Experimental investigation in controlled conditions of the impact of dynamic spectrum sharing on maximum-power extrapolation techniques for the assessment of human exposure to electromagnetic fields generated by 5G gNodeB
Maximum-Power Extrapolation (MPE) techniques adopted for 4G and 5G signals are applied to systems using Dynamic Spectrum Sharing (DSS) signals generated by a base station and transferred to the measurement instruments through an air interface adapter to obtain a controlled environment. This allowed to focus the analysis on the effect of the frame structure on the MPE procedure, excluding the random effects associated to fading phenomena affecting signals received in real environments. The analysis confirms that both the 4G MPE and the proposed 5G MPE procedure can be used for DSS signals, provided that the correct number of subcarriers in the DSS frame is considered.
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