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Systematic recursive construction of LDPC codes

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2 Author(s)
N. Miladinovic ; Dept. of Electr. Eng., Univ. of Hawaii, Honolulu, HI, USA ; M. Fossorier

This letter presents a systematic and recursive method to construct good low-density parity-check (LDPC) codes, especially those with high rate. The proposed method uses a parity check matrix of a quasi-cyclic LDPC code with given row and column weights as a core upon which the larger code is recursively constructed with extensive use of pseudorandom permutation matrices. This construction preserves the minimum distance and girth properties of the core matrix and can generate either regular, or irregular LDPC codes. The method provides a unique representation of the code in compact notation.

Published in:

IEEE Communications Letters  (Volume:8 ,  Issue: 5 )