Table 2 Performance comparison between the flooding and the layered BP decoders with GPU implementation.

From: High-throughput GPU layered decoder of quasi-cyclic multi-edge type low density parity check codes in continuous-variable quantum key distribution systems

Code rate 0.1 0.1 0.05 0.05 0.02 0.02
SNR 0.161 0.161 0.076 0.076 0.03 0.03
\(\beta\) 92.86% 92.86% 94.63% 94.63% 93.80% 93.80%
Number of iterations 100 50 150 75 200 100
Decoding method flooding layered flooding layered flooding layered
Total number of edges 3,767,500 3,767,500 3,480,000 3,480,000 3,337,500 3,337,500
FER 0.173 0.179688 0.253906 0.25 0.324219 0.328125
Latency per iteration (ms) 42.216 39.931 37.708 35.081 35.635 32.397
Error correction speed (Mbits/s) 30.32 64.11 22.63 48.65 17.96 39.51