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The throughput of a conventional rate-compatible code based hybrid automatic repeat request (HARQ) protocol is lower-bounded by the rate of the mother code used. The mother code rate along with the highest puncture rate determine the operation range of the protocol in terms of the average received signal-to-noise ratio (SNR). In this paper, we propose a new HARQ protocol based on rate-compatible punctured...
Low-density parity-check (LDPC) codes are promising for low code rate applications, however its competitiveness over BCH codes in the high code rate region is not well studied. In this work, we compare the Euclidean geometry (EG) LDPC and BCH codes of the length 1,023, 4,095, and 16,383 that have the code rates of 0.75~0.85. Hard-decision input data are applied to both decoders, and the EG-LDPC codes...
Modern VLSI decoders for low-density parity-check (LDPC) codes require high throughput performance while achieving high energy efficiency on the smallest possible footprint. In this paper we present a valuable optimization to the processing step known as syndrome check. After each decoding iteration the updated posterior values are used to verify the validity of the codeblock and halt the decoding...
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