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A low-complexity algorithm for decoding of M-ary LDPC codes

机译:一种用于M进制LDPC码解码的低复杂度算法

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摘要

M-ary LDPC codes provide higher performances than their binary counterpart but suffer from highest decoding complexity. The use of stochastic decoding algorithm can reduce the decoding complexity, but the computational complexity of probability generation is very high. A simple method to fast generate the probability especially in high-order modulation schemes is proposed in this paper. Simulation results show the proposed algorithm causes negligible performance degradation with reduction in computational complexity, which gives some advantages in hardware implementation of the decoders.
机译:M进制LDPC码比二进制LDPC码提供更高的性能,但是具有最高的解码复杂度。随机解码算法的使用可以降低解码的复杂度,但是概率生成的计算复杂度很高。提出了一种快速生成概率的简单方法,特别是在高阶调制方案中。仿真结果表明,该算法在降低计算复杂度的前提下,性能下降幅度可忽略不计,在解码器的硬件实现上具有一定优势。

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