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This commit is contained in:
zeefaad
2026-02-13 11:07:55 +01:00
parent a1da2efedf
commit 33a376967a
3 changed files with 22 additions and 29 deletions
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2
Code/ldpc/src/decoder/bit_flip.rs
View File

@ -25,7 +25,7 @@ impl<'a> BitFlipDecoder<'a> {
let mut sum = 0;
// Calcul des equation de parité
for &bid in cb {
sum ^= cb[bid];
sum ^= curr_bits[bid];
}
s[cnid] = sum;

11
Code/ldpc/src/encoder/dense.rs
View File

@ -38,17 +38,6 @@ impl DenseEncoder {
pub fn encode(&self, message: &[u8]) -> Vec<u8> {
assert_eq!(message.len(), self.k, "Taille du message non valide");
// let mut codeword = vec![0; self.n];
// s = u * G
// for c in 0..self.n {
// let mut sum = 0;
// for r in 0..self.k {
// sum ^= message[r] & self.g_matrix.get(r, c);
// }
// codeword[c] = sum;
// }
let mut codeword: Vec<u8> = (0..self.n)
.map(|c| {

34
Code/ldpc/src/main.rs
View File

@ -8,6 +8,7 @@ mod tanner;
use code::LdpcCode;
use construction::random::generate_random_h;
use decoder::bit_flip::BitFlipDecoder;
use encoder::dense::DenseEncoder;
fn main() {
@ -42,18 +43,6 @@ fn main() {
println!("\nMessage u : {:?}", message);
println!("\nCodeword s : {:?}", codeword);
// let mut is_valid = true;
// for r in 0..m {
// let mut sum = 0;
// for c in 0..n {
// sum ^= codeword[c] & h_matrix.get(r, c);
// }
// if sum != 0 {
// is_valid = false;
// break;
// }
// }
let is_valid = (0..m).all(|r| {
let sum = codeword
.iter()
@ -64,7 +53,22 @@ fn main() {
println!("\n{}", if is_valid { "Vrai" } else { "Faux" });
// println!("\nGauss-Jordan sur H :");
// h_matrix.gauss_jordan();
// h_matrix.print();
println!("\nCorrection (bit-flipping)");
let decoder = BitFlipDecoder::new(&ldpc);
let max_iter = 50;
let receiver_codeword = codeword.clone();
match decoder.decode(&receiver_codeword, max_iter) {
Some(corrected_codeword) => {
if corrected_codeword == codeword {
println!("Code reconstrui");
} else {
println!("Convergence mais mauvais codeword")
}
println!("Message original : {:?}", codeword);
println!("Message original : {:?}", corrected_codeword);
}
None => println!("Pas de convergence..."),
}
}