We study the connectivity of overlaid wireless networks where two users can communicate if the signal-to-interference ratio is larger than a threshold subject to an outage constraint. By using percolation theory, we first specify a 2-dimensional connectivity region defined as the set of density pairs—the density of secondary users and the density of primary users— within which the secondary network is percolated. Several interesting properties of this region are also revealed. Our work provides a new perspective for better understanding of the connectivity of large-scale overlaid networks.
['Yang Liu', 'Chengzhi Li', 'Changchuan Yin', 'Huaiyu Dai']
Connectivity for overlaid wireless networks with outage constraints