Energy Efficiency Maximization of Full-Duplex and Half-Duplex D2D Communications Underlaying Cellular Networks

Algorithm 3

Iterative bisection-alternate optimization method for half-duplex D2D.

Input: Set iteration index , and tolerance , , , , calculate the corresponding EE.

Output: optimal transmission powers , , , , and

Repeat

Measure the interference powers at CUE and DUEs.

Solve the quasiconcave optimization problems of (22)–(24) and obtain , , respectively.

if ,

    and

   ,

    and

else

   , repeat.