Analysis of Error Floors of Non-Binary LDPC Codes over MBIOS Channel

Details Analysis of Error Floors of Non-Binary LDPC Codes over MBIOS Channel Analysis of Error Floors of Non-Binary LDPC Codes over MBIOS Channel

2011-06-10

arxiv.org/abs/1106.2109v1

Computer Science

Information Theory

15 pages, 9 figures, The material in this paper was presented in part at IEEE International Conference on Communications, subm

Scientific paper

In this paper, we investigate the error floors of non-binary low-density parity-check (LDPC) codes transmitted over the memoryless binary-input output-symmetric (MBIOS) channels. We provide a necessary and sufficient condition for successful decoding of zigzag cycle codes over the MBIOS channel by the belief propagation decoder. We consider an expurgated ensemble of non-binary LDPC codes by using the above necessary and sufficient condition, and hence exhibit lower error floors. Finally, we show lower bounds of the error floors for the expurgated LDPC code ensembles over the MBIOS channel.

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