Dynamic Spectrum Access Bursts Into Airwaves

摘要

R adio technology being developed by the Defense Advanced Research Projects Agency uses electro-magnetic spectrum so effectively that it has gained White House attention and is being touted by government offi- cuds for possible commercial use both domestically and internationally. In recent years, the demand for spectrum has swelled immensely, both commercially and within the military. Cellular telephones, wireless e-mail, digital audio and high-definition television all compete for the same spectrum the military needs for command, control, communications, computers, intelligence, reconnaissance and surveillance technologies. With so many demands on the spectrum, U.S. military forces face unique access issues in each country in which they operate, and constraints may interfere with the operation of critical systems, in part negating the military's technological advantage.