基于随机计算实现了二进制低密度奇偶校验码(LDPC)译码初始化的公式。首先对LDPC译码中的初始化公式进行坐标映射,将输入数据转换到概率域上,然后对其进行线性近似,最后采用随机计算和门电路实现初始化,以达到降低硬件实现复杂度的目的。该方法与已有的存储器方法相比硅片面积减少了37%,并且在保持译码性能基本相同的情况下译码硅片面积最大减少了12.3%,当使用FPGA实现时,利用该方法使得相应的4输入查找表个数减少了12.8%。 The formula of binary LDPC decoding initialization is realized based on random calculation. Firstly, the initialisation formula in LDPC decoding is coordinate-mapped, the input data is converted to the probability domain, and then linear approximation is performed on it. Finally, random calculation and gate are used to realize initialization, so as to reduce the hardware implementation complexity. This method reduces the area of ​​the silicon by 37% compared with the existing memory method, and reduces the area of ​​the decoded silicon by 12.3% while maintaining the same decoding performance. When implemented in the FPGA, the method makes the The corresponding 4-input look-up table number decreased by 12.8%.