Low-Density Parity Check Codes over GF (q)

Low-Density Parity Check Codes over GF (q)
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DOI:
10.1109/4234.681360
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发表时间:
1998-06-01
期刊:
IEEE COMMUNICATIONS LETTERS
影响因子:
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通讯作者:
MacKay, David
MacKay, David
中科院分区:
其他
文献类型:
--
作者:
Davey, Matthew C.;MacKay, David

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Gallager的低密度二进制奇偶校验码已经被证明在使用概率解码算法解码时具有接近香农极限的性能。我们报告了在二元对称信道和二元高斯信道下,使用GF(q)上的类似码(q > 2)进行纠错的实验结果。我们发现,一个显着的改善,在二进制码的性能,包括1/4率的代码与比特错误概率< 10(-5)在E(B)/N(0)= 0.2 dB。
Gallager's low-density binary parity check codes have been shown to have near-Shannon limit performance when decoded using a probabilistic decoding algorithm. We report the empirical results of error-correction using the analogous codes over GF (q) for q > 2; with binary symmetric channels and binary Gaussian channels. We find a significant improvement over the performance of the binary codes, including a rate 1/4 code with bit error probability < 10(-5) at E(b)/N(0) = 0.2 dB.