“…They discovered that one of the gaps is the devices' adaptability to work in various topologies. Different laws in many nations could be problematic (Alejandrino et al, 2019).…”
“…They discovered that one of the gaps is the devices' adaptability to work in various topologies. Different laws in many nations could be problematic (Alejandrino et al, 2019).…”
“…Licensed and unlicensed wireless devices may share the same spectrum with the CR method, which was inspired by the concept of software-defined radio [1]. Figure 1 shows that numerous companies are making significant efforts to realize CR technology because of the wide variety of potential uses it could have, from TV White Spaces (TVWSs) [2] to satellite communications [3][4][5]. According to the CR network, principal (licensed) users (PUs) have spectrum priority.…”
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