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Erschienen in:
2015 | OriginalPaper | Buchkapitel
6. Conclusions
verfasst von : ChunSheng Xin, Min Song
Erschienen in: Spectrum Sharing for Wireless Communications
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Abstract
Thanks to the exponential growth of wireless devices and wireless traffic, the demand for radio spectrum is stronger than ever. However, the radio spectrum has been already largely licensed, due to the static spectrum allocation policy. This creates the so-called spectrum scarcity problem. Fortunately, the spectrum scarcity is an artificial problem. Many studies have found that the licensed spectrum is significantly under-utilized in the temporal, spatial, and frequency domains. Motivated by these findings, there have been extensive research on how to significantly increase spectrum utilization in recent years. A consensus from the research community is to allow users to share spectrum dynamically and efficiently.