low density parity check codes;
error floor;
linear encoding;
D O I:
10.1109/LCOMM.2006.05023
中图分类号:
TN [电子技术、通信技术];
学科分类号:
0809 ;
摘要:
In this letter, we propose a class of irregular structured low-density parity-check (LDPC) codes with low error floor and low encoding complexity by designing the parity check matrix in a triangular plus dual-diagonal form. The proposed irregular codes clearly lower the error floor and dramatically improve the performance in the waterfall region of error-rate curves. Being characterized by linear encoding complexity, the encoders of the proposed codes attain throughputs over 10 Gbit/s.