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First, to introduce the background of our research, as the number of mobile communication devices increases, the demand for spectrum resources grows, and the way to meet that demand is, first, to expand more spectrum resources and, second, to improve the utilization of existing spectrum resources. Method 1 is too costly, so we first focus on Method 2. Cognitive radio technology is to improve spectrum utilization by adjusting the device's own parameters so that secondary users access it while sensing the absence of the primary user. |
IEEE/ICACT20220147 Slide.04
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