In the Internet of Things (IoT). spectral efficiency is a major challenge since many sensors and devices are placed widely throughout the network. Spectrum scarcity issues have been a concern for the Internet of Things since its inception. The use of Cognitive Radio (CR) technology is thought to be a potential remedy. https://www.diegojavierfares.com/mega-pick-LSU-Tigers-NCAA-Bold-Color-Tote-Bag-p23366-amazing-save/
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