Radiofiequency interjerence ( W I ) caused by commercial and military spectrum crowding is a growingproblem for digital battlefield communication systems. Current electromagnetic spectrum planning generally involves static fiequency allocations that are diflcult to mod& afler force insertion. Currently, no real time spectrum management systems exist to coordinate the dynamic spectrum environment experienced by mobile military communications.DoD plans for the Joint Tactical Radio System (JTM) indicate that software defined radios (SDR) will be key components of the future battlefield. In this paper we investigate battlefield spectrum efficiency problems caused by RFI, and propose near term solutions that exploit the capabilities of emerging software defined radios to provide real time spectrum planning andfiequency adaptation,
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