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Low-density parity-check (LDPC) codes are an important choice of the error correction codes in broadband powerline communication (PLC) systems. In this paper, a "column extension" design method for rate-compatible quasi-cyclic (QC) LDPC codes is proposed, which can provide efficient multi-rate QC-LDPC schemes for PLC systems. Based on the optimization of(More)
This paper proposes a "column extension" design method for rate-compatible quasi-cyclic (QC) low-density parity-check (LDPC) codes, which can provide efficient multi-rate coding schemes for communication systems with flexible spectrum efficiency. The optimization of degree distributions among multiple code rates makes the designed QC-LDPC codes achieve(More)
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