Resource Allocation Algorithm for NOMA-Enhanced D2D Communications with Energy Harvesting

Algorithm 2

Online power allocation optimization algorithm.

	Input: the channel allocation matrix X, the number of epoch K, the length of epoch , hn,1, hn,2, hBn,1, hBn,2, the harvested energy En,k, , PBS, , and .
	Output: the online transmission power and the power allocation factor .
(1)	Initialization: k = 1, , , .
(2)	For m = 1 : M
(3)	n = find(X(:, m) == 1);
(4)	while k ≤ K
(5)	Input the input vector to the neural network to obtain ;
(6)	;
(7)	Calculate with equation (20) or (21);
(8)	k = k + 1;
(9)	;
(10)	;
(11)	End while
(12)	End for