Table 1.

Tables of direct mode and cooperative mode.

(a) Direct Mode		(b) Cooperative Mode
	Direct Mode	Coop. with SU ${}_{\mathbf{1}}$	Coop. with SU ${}_{\mathbf{2}}$	⋯	Coop. with SU ${}_{\mathbf{K}}$
PU${}_1$	${\eta }_1^{*}$	${\eta }_{1,1}^{*}$	${\eta }_{1,2}^{*}$	⋯	${\eta }_{1,K}^{*}$
PU${}_2$	${\eta }_2^{*}$	${\eta }_{2,1}^{*}$	${\eta }_{2,2}^{*}$	⋯	${\eta }_{2,K}^{*}$
⋯		⋯			⋯
PU${}_M$	${\eta }_M^{*}$	${\eta }_{M,1}^{*}$	${\eta }_{M,2}^{*}$	⋯	${\eta }_{M,K}^{*}$