NB-LDPC译码程序

# Welcome to the c code for NB-LDPC simulation You can use this code to simulation NB-LDPC matrices using the Extented-Min Sum (EMS) algorithm. The Check Node (CN) is processed using Forward Backward(FB) algorithm. The FB algorithm splits CN in elementary CNs (ECN) # usage ## input argument there are 8 arguments 1. NbMonteCarlo : # simulated frames 1. NbIterMax : # of maximum decoding iteration 1. FileMatrix : File name of the parity-check matrix 1. EbN : Eb/No (dB) 1. n_vc : size of truncated messages from Variable to Check 1. n_cv : size of truncated messages from Check to Variable 1. Offset : offset correction factor (0.4 -- 1) 1. NbOper : Maximum number of operations for sorting ## output Frame Error Rate for the given simulation parameters ## input and output files * Input File : 'FileMatrix' is an ASCII file with the parity-check matrix description in aList format. * Output File : a txt file giving in the ./data forder giving SNR, BER, average number of iterations and time of the end of simulation ## Simulation on windows you may use CodeBlocks IDE in the Projet-> Set Programs' arguments > 2000 10 ./matrices/KN/N576_K480_GF64.txt 3.5 20 20 0.3 25 ## Simulation on Linux compile the c code using the makefile > make then run with appropriate parameters > ./essai 2000 10 ./matrices/KN/N576_K480_GF64.txt 3.5 20 20 0.3 25 you may use the start.sh shell script to run simulation for multiple snr > sh ./start.sh ## Simulation results > Monte-Carlo simulation of Non-Binary LDPC decoder > > > Simulation parameters: > > NbMonteCarlo : 2000 > NbIterMax : 10 > FileMatrix : ./matrices/KN/N576_K480_GF64.txt > Eb/No (dB) : 3.5 > n_vc : 20 > n_cv : 20 > Offset : 0.3 > NbOper : 25 > > Normal alist format is used! > LDPC code parameters: > N :96 > K :80 > M :16 > CR :0.833333 > GF :64 > logGF :6 > > Note : FB30 > Simulation started at time: Wed Jan 08 17:34:02 2020 > > <0> FER= 40 / 751 = 0.053262 BER= 520 / x = 0.001443 avr_it=2.58 > results are printed in file ./data/results_N96_CR0.83_GF64_IT10_Offset0.3_nm20_FB30.txt > > results printed > > Simulation complete at time: Wed Jan 08 17:34:08 2020