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Paper detail

Rate-Compatible Protograph-based LDPC Codes for Inter-Symbol Interference Channels

This letter produces a family of rate-compatible protograph-based LDPC codes approaching the independent and uniformly distributed (i.u.d.) capacity of inter-symbol interference (ISI) channels. This problem is highly nontrivial due to the joint design of structured (protograph-based) LDPC codes and the state structure of ISI channels. We describe a method to design nested high-rate protograph codes by adding variable nodes to the protograph of a lower rate code. We then design a family of rate-compatible protograph codes using the extension method. The resulting protograph codes have iterative decoding thresholds close to the i.u.d. capacity. Our results are supported by numerical simulations.

preprint2013arXivOpen access
Thuy Van NguyenAria NosratiniaDariush Divsalar
math.ITInformation Theory
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Thuy Van NguyenAria NosratiniaDariush Divsalar

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