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Exp_FS_HL_RL.jl
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Exp_FS_HL_RL.jl
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include("LLR.jl")
include("Proj.jl")
include("ADMM_FS.jl")
include("ADMM_HL.jl")
include("ADMM_RL.jl")
###
# This code generates multiple Monte-Carlo simulations to estimate the frame/bit
# error rate and iteration complexity of ADMM-LP decoding with different parity
# polytope projection algorithms. To estimate the error rate, we require sufficient
# error patterns to average over. To do so, we allocate a parameter called
# "total_error_sim" to identify how many error patterns should be observed to obtain
# a quite precise estimation of error rates. The default value is set to 100.
###
# Choose your LDPC code in the following by uncommenting the corresponding lines
# However, make sure to change N_Dec and the arguments for different experiments accordingly
# Uncomment to use the Margulis code:
include("LDPC Codes/Margulis/getH_Margulis_ADMM.jl")
x_inp = readdlm("LDPC Codes/Margulis/codeword2640.txt")[1,:] # input codeword
# Uncomment to use the Quasi-cyclic code:
# include("LDPC Codes/QuasiCyclic/getH_QC_ADMM.jl")
# x_inp = zeros(N)
# Uncomment to use the WiGig code:
# include("LDPC Codes/WiGig/getH_WiGig_ADMM.jl")
# x_inp = readdlm("LDPC Codes/WiGig/wifiCodewords.txt")[2,:]
# Uncomment to use the IEEE [576, 288] code:
# include("LDPC Codes/IEEE_576x288/getH_576x288_ADMM.jl")
# x_inp = readdlm("LDPC Codes/IEEE_576x288/IEEE_576x288_codeword.txt")[1,:]
# decoder parameters
μ = 3
ρ = 1.9
ϵ = 10^(-5)
method = "L2"
α = 0.8
N_iter = 20
N_ET = 1
γ = zeros(N)
ϕ = 5 # specific for RL decoder
# experiment parameters
SNR_vec = 1:0.2:6
N_SNR = length(SNR_vec)
N_Dec = 3 # 1)FS 2)HL 3)RL
BER_vec = zeros(N_SNR, N_Dec)
FER_vec = zeros(N_SNR, N_Dec)
Iter_vec = zeros(N_SNR, N_Dec)
Nsim_vec = zeros(N_SNR, N_Dec)
total_error_sim = 100 # number of error patters to get per SNR
for j = 1:N_SNR
total_sim = zeros(N_Dec)
correct_sim = zeros(N_Dec)
error_sim = zeros(N_Dec)
bit_error = zeros(N_Dec)
correct_iter = zeros(N_Dec)
SNR = SNR_vec[j]
println("SNR = $SNR:")
while minimum(error_sim) < total_error_sim
UpdateLLR(x_inp, γ, "AWGN", SNR)
# FS
if error_sim[1] < total_error_sim
x_dec, iter = ADMMdecoder_FS(method, γ, N_iter, ϵ, μ, ρ, α, N_ET)
if sum( Int.( x_dec .!= x_inp ) ) != 0
error_sim[1] += 1
bit_error[1] += sum( Int.( x_dec .!= x_inp ) )
else
correct_sim[1] += 1
correct_iter[1] += iter
end
total_sim[1] += 1
end
# HL
if error_sim[2] < total_error_sim
x_dec, iter = ADMMdecoder_HL(method, γ, N_iter, ϵ, μ, ρ, α, N_ET)
if sum( Int.( x_dec .!= x_inp ) ) != 0
error_sim[2] += 1
bit_error[2] += sum( Int.( x_dec .!= x_inp ) )
else
correct_sim[2] += 1
correct_iter[2] += iter
end
total_sim[2] += 1
end
# RL
if error_sim[3] < total_error_sim
x_dec, iter = ADMMdecoder_RL(method, γ, N_iter, ϵ, μ, ρ, α, N_ET, ϕ)
if sum( Int.( x_dec .!= x_inp ) ) != 0
error_sim[3] += 1
bit_error[3] += sum( Int.( x_dec .!= x_inp ) )
else
correct_sim[3] += 1
correct_iter[3] += iter
end
total_sim[3] += 1
end
if maximum(total_sim) % 10000 == 0
for k = 1:3
FER_vec[j, k] = error_sim[k] / total_sim[k]
BER_vec[j, k] = bit_error[k] / total_sim[k] / N
Iter_vec[j, k] = correct_iter[k] / correct_sim[k]
Nsim_vec[j, k] = total_sim[k]
end
println("SNR = ", SNR, ", # errors = ", error_sim, ", FER = ", FER_vec[j,:])
open("SNR_FER_BER_CoIter_Nsim_Margulis_ADMM_FS_HL_RL_Niter20_Nerr100.txt", "w") do io
writedlm(io, [SNR_vec FER_vec BER_vec Iter_vec Nsim_vec], ',')
end
end
end
for k = 1:3
FER_vec[j, k] = error_sim[k] / total_sim[k]
BER_vec[j, k] = bit_error[k] / total_sim[k] / N
Iter_vec[j, k] = correct_iter[k] / correct_sim[k]
Nsim_vec[j, k] = total_sim[k]
end
println("SNR = ", SNR, ", # errors = ", error_sim, ", FER = ", FER_vec[j,:])
open("SNR_FER_BER_CoIter_Nsim_Margulis_ADMM_FS_HL_RL_Niter20_Nerr100.txt", "w") do io
writedlm(io, [SNR_vec FER_vec BER_vec Iter_vec Nsim_vec], ',')
end
end