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On the views of almost all commentators, the primary obstacle to recognizing property rights in spectrum is either a lack of economic sophistication or political will by the relevant policymakers. To such commentators, the FCC (or a court) could simply enforce property rights at the geographic boundary of a coverage area as well as at the boundaries (or edges) of different frequency bands. The FCC...
Recent study by FCC spectrum policy task force (SPTF) found that while the available spectrum becomes increasingly scarce, the assigned spectrum is significantly underutilized. Cognitive radio technology holds the key promise to solve such problems. In this paper, we investigate some physical layer issues of wide-band cognitive radio systems. Specifically, we discuss the physical layer signal structure...
Today, the largest and most desirable portion of the radio spectrum is allocated to licensed services, which has resulted in the well-known profound scarcity of this resource for emerging applications. With the rapid growth of wireless technologies, current spectrum scarcity has become a serious problem as more and more wireless applications compete for very little spectrum. On the other hand, the...
The traditional approach to managing radio frequency (RF) spectrum concludes with a spectrum management administration identifying how a band of spectrum may be used in a region it administers and who may use it. This approach to spectrum management is encumbered with political process that is challenged to keep pace with the rapid advances in technologies that exploit RF spectrum. Recognizing that...
Sharing spectrum with systems that employ frequency reuse over large geographical areas (e.g., TV stations) provides an opportunity to improve spectrum utilization. The Federal Communications Commission (FCC) is considering such sharing in the TV hands (2004). This technical and regulatory opportunity prompted the IEEE to create a new committee, 802.22, that will develop a wireless regional area network...
Spectrum is one of the most precious radio resource. With the increasing demand for wireless communication, efficiently using the spectrum resource has become an essential issue. With the Federal Communications Commission's (FCC) spectrum policy reform, secondary spectrum sharing has become a viable option. One of the policy reforms introduces the concept of an interference temperature-the total allowable...
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