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DYNAMIC SPECTRUM ACCESS IN COGNITIVE RADIO NETWORKS

By III Thomas Charles Clancy

Abstract

Since the 1930’s, the Federal Communications Commission (FCC) has con-trolled the radio frequency energy spectrum. They license segments to particular users in particular geographic areas. A few, small, unlicensed bands were left open for anyone to use as long as they followed certain power regulations. With the re-cent boom in personal wireless technologies, these unlicensed bands have become crowded with everything from wireless networks to digital cordless phones. To combat the overcrowding, the FCC has been investigating new ways to manage RF resources. The basic idea is to let people use licensed frequencies, pro-vided they can guarantee interference perceived by the primary license holders will be minimal. With advances in software and cognitive radio, practical ways of doing this are on the horizon. In 2003 the FCC released a memorandum seeking comment on the interference temperature model for controlling spectrum use. Analyzing the viability of this model and developing a medium access protocol around it are the main goals of this dissertation

Year: 2006
OAI identifier: oai:CiteSeerX.psu:10.1.1.135.724
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