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Decoding low density parity check codes with finite quantization bits
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DOI：10.1109/4234.824757.png)
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This letter is concerned with the implementation issue of the sum-product algorithm (SPA) for decoding the low density parity check codes, It is shown that the direct implementation of the original form of SPA is sensitive to the quantization effect. We propose a parity likelihood ratio technique to overcome the problem. It is shown that for comparable performance the new method can be implemented with much less quantization bits, which can lead to considerably lower decoding cost.
Keyword:
error correcting codes
low density parity check codes
turbo codes
期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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