A Fast Adaptive Receive Antenna Selection Method in MIMO System

Algorithm 2

Selected antenna numbers are more than half of total receive antenna numbers.

(1) 2𝑁_𝐿>𝑁_𝑅𝑁_𝑅,𝑁_𝐿,𝑁_𝑇,ℎ₁,ℎ₂,…,ℎ_𝑁  Γ={1,2,…,𝑁_𝑅}

(2) for 𝑖=1 to 𝑁_𝑅

(3)  𝛽_𝑖,1=ℎ^𝐻_𝑖ℎ_𝑖                 𝑂(𝑁_𝑇𝑁_𝑅)

(4) end

(5) 𝐴₁=𝐻^𝐻𝐻⁻¹

(6) for 𝑛=1 to (𝑁_𝑅−𝑁_𝐿)

(7)    𝐼=argmin_𝑖∈Γ𝛽_𝑖,𝑛                𝑂(𝑁_𝑅(𝑁_𝑅−𝑁_𝐿))

(8)    Γ=Γ−{𝐼}

(9)   if 𝑛<(𝑁_𝑅−𝑁_𝐿)

(10)    1𝑏=1+𝛽_𝐼,𝑛𝐴_𝑛ℎ_𝐼            𝑂(𝑁²_𝑇(𝑁_𝑅−𝑁_𝐿))

(11)    𝐴_𝑛+1=𝐴_𝑛+𝑏𝑏^𝐻              𝑂(𝑁²_𝑇(𝑁_𝑅−𝑁_𝐿))

(12)    for all 𝐼∈Γ

(13)     𝛽_𝑖,𝑛+1=𝛽_𝑖,𝑛+𝑏^𝐻ℎ_𝑖²            𝑂(𝑁_𝑇𝑁_𝑅(𝑁_𝑅−𝑁_𝐿))

(14)    end

(15)   end

(16) end

(17) return Γ