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4.7-Gb/s LDPC Decoder on GPU
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DOI：10.1109/LCOMM.2017.2778727.png)
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摘要
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Graphics processing units (GPUs) are well-suited for decoding low-density parity-check (LDPC) codes because of their massive parallelisms and high flexibility. Implementations of high-throughput GPU-based LDPC decoders are described in this letter. By applying a novel message updating scheme and reducing shared memory consumption, the flooding-based and layered-based decoders outperform the corresponding state-of-the-art designs, with 55% and 34% improvements of normalized throughputs. On a single GeForce GTX 1080 Ti GPU, the two decoders achieve 4.77- and 3.67-Gb/s throughputs by incorporating early termination criterion. Throughputs of the GPU-based decoders are comparable with an implementation on the largest density field-programmable gate array.
Keyword:
LDPC codes
high throughput
decoding
GPU
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4.4
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1.3W
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2.2W
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