The parameters include generator polynomial of component codes, interleave length and the type of interleavers, iterative decoding algorithms and iteration number, code rates and channel models et al.
这些参数主要包括分量码、交织长度和交织器类型、迭代译码算法和译码迭代次数、编码速率以及信道条件等。
Compared with existed schemes, this scheme decreases the mean iteration times of decoding and reduces computation complexity with slight performance degradation.
与已有的方案相比，本方案的性能几乎没有损失，但是减少了译码的平均迭代次数，降低了计算复杂度。
Just because the orthogonal fractal decoding is a mean-invariant iteration, the watermark can be embedded into the fractal decoding parameters directly.
利用正交化分形解码参数在迭代过程中的不变性，使水印直接嵌入解码参数，从而实现了灰度水印嵌入。
It can improve the coding efficiency while reduce the decoding iteration steps.
该方法既可提高编码效率，又可减少解码迭代次数。
The corresponding simulation and analysis shows that the new criterion does help reduce the average number of decoding iteration and the time delay while the BER performance is almost not degraded.
经仿真验证，该准则在译码性能几乎没有下降的同时，有效的减少了平均迭代次数，降低了时延。
The corresponding simulation and analysis shows that the new criterion does help reduce the average number of decoding iteration and the time delay while the BER performance is almost not degraded.
经仿真验证，该准则在译码性能几乎没有下降的同时，有效的减少了平均迭代次数，降低了时延。
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