Jeff Correia is recently retired as Chief Scientist for Wireless Communications for the MITRE Corporation where he focused extensively on Spectrum related issues between commercial cellular and DoD systems in bands recently opened for cellular. Jeff was also the Chief Engineer for the OUSDR&E 5G Dynamic Spectrum Utilization Project at Hill AFB. Jeff has supported multiple Government Sponsors in the Spectrum Area including NIST/NASCTN, DARPA, MDA, and PEO Spectrum. Jeff has lectured extensively on the 4G/5G Physical Layers with emphasis on Spectrum compatibility between systems.