On the woven-like concatenation of LDPC codes

In this paper we consider the special construction of concatenated codes. Our scheme consists of outer LDPC code and a specially designed class of inner LDPC code with interleaver between inner and outer codes. An inner code in the proposed construction is obtained using a specific optimization algorithm that allows to minimize SNR for a given target frame error probability. The decoding of the proposed codes is based on the idea of woven codes decoding. Simulation results show that suggested code construction being decoded by woven-based decoding algorithm outperforms low-rate 5G LDPC codes.