diff --git a/scripts/LDPC_simulation.m b/scripts/LDPC_simulation.m
index c0f89d6..90f5e26 100644
--- a/scripts/LDPC_simulation.m
+++ b/scripts/LDPC_simulation.m
@@ -49,7 +49,7 @@
 
     %channel parameters
     sigma = sqrt(10.^(-esno_dB{j}/10));
-    Lc = 4*10.^(esno_dB{j}/10);
+    Lc = 2*10.^(esno_dB{j}/10);
 
     H = get_H(rate_sim(j),file_name);