Title :
A class of irregular LDPC codes with low error floor and low encoding complexity
Author :
He, Zhiyong ; Fortier, Paul ; Roy, Sébastien
Author_Institution :
Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada
fDate :
5/1/2006 12:00:00 AM
Abstract :
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.
Keywords :
error statistics; linear codes; matrix algebra; parity check codes; error-rate curve; irregular LDPC code; linear encoding complexity; low-density parity-check code; triangular plus dual-diagonal matrix; Bit error rate; Channel capacity; Decoding; Encoding; Ethernet networks; Floors; Helium; High speed optical techniques; Parity check codes; Throughput;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1633327
