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

Algorithm 1

The algorithm to solve (P1).

  evaluate , ;

  ; is set by a large value; ; ;

  while    do

  solve (P2) for     using Algorithm 2;

  update by ;

  end while

  output as and as the optimum RA strategy.