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A class of irregular LDPC codes with low error floor and low encoding complexity

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3 Author(s)
Zhiyong He ; Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada ; Fortier, P. ; Roy, S.

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.

Published in:

Communications Letters, IEEE  (Volume:10 ,  Issue: 5 )