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Zigangirov, “Irregular low-density paritycheck convolutional codes based on protographs

By G. Richter and K. Sh. Zigangirov

Abstract

Abstract — Irregular low-density parity-check (LDPC) codes constructed from small protographs are one of the most powerful LDPC block codes. In this paper, we introduce the convolutional version of these codes. LDPC convolutional codes constructed from protographs have some advantages in comparison to LDPC block codes constructed from protographs, e.g, an effective pipeline decoding. We show that LDPC convolutional codes constructed from protographs have much lower error rates than analogous LDPC block codes with the same complexity and that they operate with low error rates near the Shannon limits even for a relatively small memory size. I

Year: 2006
OAI identifier: oai:CiteSeerX.psu:10.1.1.318.5307
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