Frequency band sharing: utopia or reality? Towards specification of operational scenarios

In order to offer an increasing number of equipment access to the electromagnetic spectrum, the International Telecommunications Union (ITU) increasingly authorises the sharing of bands. This will inevitably result in a risk of unintentional friendly interference. The electromagnetic compatibility (EMC) of equipment will no longer be based on the sole shape of transmitted spectra. As a result the compatibility has to be previously estimated using realistic scenarios of dynamic electromagnetic environment, the latter forming an essential part of EMC.