Error floors of non-binary LDPC codes
T. Nozaki, Kenta Kasai, Kohichi Sakaniwa · 2010
In this paper, we analyze (2, k)-regular non-binary low-density parity-check codes over the binary erasure channels. We propose a method to improve the error floors by optimizing labels in zigzag cycles in the Tanner graph. We analyze the error floors for codes designed by the proposed optimization method and show that the error floors are decreasing in the size of Galois field.