Table 1.

Assessment of the individual energy-harvesting capability of NOMA and BEEM-NOMA. SIC, successive interference cancellation.

System Evaluation	Receiver	U1	U2	U3	U4
Decode	NOMA	U1, U2, U3 and U4	U2, U3 and U4	U3 and U4	U4
	M-NOMA	U1 and U2	U2	U3 and U4	U4
SIC	NOMA	U2, U3, and U4	U3 and U4	U4	N/A
	M-NOMA	U2	N/A	U4	N/A
Interference cancellation	NOMA	No	No	No	With U1, U2, and U3
	M-NOMA	No	No	No	With U3 only
Energy-harvested signals	NOMA	Power splitting of U1’s, U2’s, U3’s, and U4’s signals	Power splitting of U1’s, U2’s, U3’s, and U4’s signals	Power splitting of U1’s, U2’s, U3’s, and U4’s signals	Power splitting of U1’s, U2’s, U3’s, and U4’s signals
	M-NOMA	Power splinting of U1’s and U2’s signals and directly without power splitting from U3’s and U4’s signals	Power splitting of U1’s and U2’s signals and directly without power splitting from U3’s and U4’s signals	Power splitting of U3’s and U4’s signals and directly without power splitting from U1’s and U2’s signals	Power splitting of U3’s and U4’s signals and directly without power splitting from U1’s and U2’s signals