Suboptimal Rate Adaptive Resource Allocation for Downlink OFDMA Systems

Algorithm 2

(i) Step 1: Initialization

  𝑐_𝑘,𝑛=0,∀𝑘,𝑛

  𝑅_𝑘=0,∀𝑘

  𝐴={1,2,…,𝑁},

  𝑈={1,2,…,𝐾}.

(ii) Step 2: Subcarrier Allocation

 while (𝐴≠∅or𝑈≠∅):

   𝑘=argmax_𝑘∈𝑈(𝑅_𝑘,min−𝑅_𝑘),

   𝑛=argmax_𝑛∈𝐴𝐻_𝑘,𝑛,

   𝑐_𝑘,𝑛=1,𝐴=𝐴−{𝑛},

   𝑅_𝑘(updated with water filling policy),

   if𝑅_𝑘≥𝑅_𝑘,minthen𝑈=𝑈−{𝑘}.

 end