Electromagnetic compatibility (EMC) analysis approach for band migration to provide spectrum for the President´s Spectrum Initiative

When communication systems operating in one band must be moved to another band occupied by existing (incumbent) systems, an electromagnetic compatibility (EMC) analysis is used to evaluate the viability of spectrum sharing and frequency reassignments. The analysis starts with gathering all of the transmitter and receiver parameters of both systems. The correct propagation model for different geometric scenarios is then used to accurately estimate the signal strength of the interfering signal and determine the noise level of the victim receiver. If the separation distance is not adequate to reduce the interfering signal to an acceptable level, then the necessary frequency dependent rejection (FDR) must be determined. Finally, the interference-to-noise ratio (I/N) can be calculated which will allow a determination of frequency separation versus separation distance from the FDR curves.