基于帧交错的LDPC译码器流水结构设计

Pipeline Design of LDPC Decoder Based on Frame-Interleaving

  • 摘要: 低密度奇偶校验码(LDPC)的译码器通常采用基于节点置信度更新迭代的算法,这种算法可以并行实现,具有非常高的吞吐量。在此提出了一种具有高硬件利用效率(HUE)的帧交错译码结构,并提供了一种用于层内节点重排序的动态规划方法,解决内存访问冲突问题。与现有的结构相比,该结构可以实现更高的硬件利用效率。

     

    Abstract: The decoder of low density parity check code (LDPC) generally adopts an iterative algorithm based on node confidence update, which can be implemented in parallel and has very high throughput. In this paper, we propose a frame-interleaving decoding structure with high hardware utilization efficiency (HUE) features and develop a dynamic planning method for node reordering within layers, which can solve the memory access conflict problems. Compared with the existing structures, the proposed structure shows more efficiency with respect to hardware utilization.

     

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