Energy Efficiency Maximized Resource Allocation for Opportunistic Relay-Aided OFDMA Downlink with Subcarrier Pairing

Algorithm 2

The algorithm to solve (P2).

  ;

  solve (P3) for   using Algorithm 3;

  if   is feasible for (P2)   then

  output   as  

  else

  ; is set as a sufficiently large value;

  while    do

  ;

  solve (P3) for   using Algorithm 3;

  if    then

  ;

  else if    then

  ;

  else if   then

  break;

  end if

  end while

  end if

  Output   as  .