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Recent studies have been conducted to indicate the ineffective usage of licensed bands due to the static spectrum allocation. In order to improve the spectrum utilization, the cognitive radio is therefore suggested to dynamically exploit the opportunistic primary frequency spectrums. The interference from the secondary users to the primary user consequently draws the attention to the spectrum and...
Spectrum sharing is of special significance among all the key technologies in cognitive radio (CR), such as spectrum sensing, spectrum management and power allocation etc. Since all the efforts in CR directly aim at enhancing spectrum utilization and spectrum sharing is the final step of all these key technologies, spectrum sharing completely determines whether CR is just a theoretical topic or a...
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