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Potential and Criticalities of the Shared Access to Spectrum
Ministry of Economic Development
Joint Research Centre (EC)

To investigate the potential and criticalities of the shared access to radio spectrum, defining methods of general validity.

To provide elements to support the completion of the European regulatory framework for the 2.3 GHz band.


The project (MiSE-ISCOM) has supported the development of the European regulatory framework for the introduction of wireless broadband in the 2.3-2.4 GHz band. The developed analyses and experimental methods are generally valid and can be applied to study the shared access in other frequency bands.

The study of the coexistence of LTE and Wi-Fi, finally, is important for the analysis of technological solutions, currently in the standardisation phase, to employ licence-exempt frequencies by mobile systems.


The project studies the potential and the possible critical issues of the shared access to spectrum by different users. Studies are conducted through experiments and analysis of the technical conditions for sharing.

The project welcomes the invitation of the European Commission to Member States to investigate the possible interference issues related to the introduction of the Wireless Broadband in the 2.3-2.4 GHz band.

To this end, procedures and measurement methodologies have been conceived and implemented to assess in the laboratory and in the real environment the effects of interference generated by LTE networks in the 2.3-2.4 GHz band onto WiFi receivers operating in the adjacent band. This would also help in the study of possible technical solutions for the mitigation of interference.

The project has been carried out in close collaboration with the Joint Research Centre of the European Commission, Ispra (VA), engaged in similar assessments.

The coexistence studies have required a detailed characterisation of the interference mechanisms. This allowed the definition of appropriate indicators (Key Performance Indicators, KPI) and related metrics for estimating the performance of the different systems in the presence of interfering signals.

Two different types of experimental setups have been designed: for the laboratory analysis, a dedicated measurement testbed has been prepared; for the analysis of irradiated signals, an LTE radio base station has been installed and connected with mobile terminals, in a real working environment in the presence of different Wi-Fi systems.

Both setups have allowed the carrying out of a preliminary set of tests, thanks to which the measurement methods have been consolidated and the first results were obtained.