Joint sub-carrier pairing and resource allocation for cognitive networks with adaptive relaying

EURASIP Journal on Wireless Communications and Networking

Table 1 Complexity of the used algorithms

Scheme	Complexity
Sub-gradient algorithm	$O (TN)$
ARP with sub-carrier mathcing	$O (T N^{2})$
ARP with sub-carrier pairing	$O (T N^{3})$