A Modified Q-LDPC Decoding for Reducing Oscillation
Quan Zi-yi · Beijing Youdian Xueyuan xuebao · 2008
Based on the oscillation phenomenon in the decoding of Q-LDPC(q-ary low-density parity-check) codes,a modified decoding algorithm was proposed.In each iteration,for oscillating variable nodes,the previous posteriori probabilities are added to the current posteriori probabilities to reduce effects of oscillating in decoding.The computer simulation shows that the modified decoding algorithm can reduce bit error rate and block error rate for short and middle length QLDPC codes with low complexity.