Energy-Efficient Power and Subcarrier Allocation in Downlink OFDMA Systems with Channel Estimation Errors

Algorithm 1

Dynamic Power and Subcarrier Allocation (DPSA).

1: At each time slot , obtain the current queue state , and the estimated CSI ;

2: Allocate power and subcarrier by solving the following optimization:

3: Update and according to (6) and (15), respectively.