Joint Subchannel Pairing and Power Control for Cognitive Radio Networks with Amplify-and-Forward Relaying

Algorithm 3

Suboptimal algorithm  1.

(1) Let 𝜌_𝑛,𝑛=1, 𝜌_𝑛,𝑚=0,𝑃^𝑠_𝑛,𝑚=0, and 𝑃^𝑟_𝑛,𝑚=0,∀𝑛,𝑚∈𝐍 and 𝑚≠𝑛,

(2) Initiate the value of 𝝀(𝟎),

(3) for   𝑡=1 to the maximum number of iterations, do

(4) Calculate transmission power 𝑃^𝑠_𝑛,𝑛 and 𝑃^𝑟_𝑛,𝑛,∀𝑛∈𝐍 by (18) and (19), respectively.

(5) Update 𝝀(𝑡) by (10).

(6) end for