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The envisaged high data rates of Long Term Evolution- Advanced (LTE-Advanced) systems necessitate the requirement of high spectral efficiency. To meet the spectral efficiency requirements of LTE-Advanced systems, a novel resource scheduling algorithm is proposed in this paper. Since LTE-Advanced systems are expected to be deployed in a two-tier cell architecture, where femtocells will be deployed...
The cooperation among cognitive users (CUs) is considered as an efficient means to improve the primary user (PU) sensing in cognitive radio environment. Almost all previous related works employ the cooperation among CUs for PU activity detection whereas in this paper, the notions of cooperation among PUs and CUs are applied. This is achieved by allocating the available PU power among OFDMA subcarriers...
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