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This paper presents a novel low-complexity iterative reliability-based decoding algorithm for LDPC codes over q-ary finite fields. This proposed algorithm has low complexity and hence provides an effective trade-off between error performance and decoding complexity compared to q-ary sum product algorithm. This decoding algorithm is devised based on simple orthogonal concept of one-step majority-logic...
The linear-programming decoding performance of a binary linear code crucially depends on the structure of the fundamental cone of the parity-check matrix that describes the code. Towards a better understanding of fundamental cones and the vectors therein, we introduce the notion of absdet-pseudo-codewords and perm-pseudo-codewords: we give the definitions, we discuss some simple examples, and we list...
Regular LDPC codes are a special class of low-density codes having an equal number of ones in each row and column of the parity check matrix describing the linear code. The uniform structure of regular LDPC codes allows a practical hardware implementation which can efficiently utilize the inherent parallelism of the message passing algorithm (MPA) commonly used to decode low-density codes. The class...
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