Labeling maps affecting the performance of bit-interleaved coded modulation with iterative decoding ( BICM-ID) system were investigated, and a new labeling map called the defined region optimum symbol map ( DRO), which satisfies performance requirement in a given SNR region, was proposed. 重点研究了对比特交织编码及迭代译码(BICM-ID)系统性能影响较大的信号标识映射方法,提出了一种满足给定区间性能要求的最佳映射(DRO)的设计方法。
Then, eight surface types from the signs of the Gaussian and mean curvatures provide an initial segmentation, which will be refined by an iterative region growing method. 再采用由高斯曲率和平均曲率的记号得到的8种曲面类型,就形成初始数据分块.通过区域增长法可以使粗略数据分块进一步被提取,得到更小的噪声影响及更精确的区域划分。
Generally, the iterative path is on the faces of a feasible region instead of on its edges as in simplex method. 一般情况下,迭代路径置于容许集的表面上,而不是象单纯形法那样迭代点沿着棱移动。
A new distorted Born iterative method is applied to inversion of large formation region by using the multi information of array. 提出利用变形玻恩迭代方法将阵列多信息用于实际大区域地层反演的新方法。
A Class of Implicit Method and Iterative Technics, with the Large Region of Absolute Stability 具有大绝对稳定域的一类隐式方法及其新的迭代技巧
An extented greed algorithm is adopted to filter testing points from the last iterative into the final sample space to acquire adaptive radial basis function in the entire design region, and then adaptive radial basis function combines NSGA-ⅱ to perform multi-objective optimization. 采用改进的贪婪算法挑选最后迭代步中的测试点到最终样本空间,构建整个设计域上的自适应径向基函数模型,并基于此模型结合具有代表性的NSGA-Ⅱ算法进行多目标优化。
This algorithm is divided into two steps, first using iterative algorithm design DOE constant illuminating region. The second step search algorithm design with the remaining regions. 这种设计算法分为两步,第一步用迭代算法设计DOE恒被照明的区域,第二步用搜索算法设计剩余区域。
We come up with an iterative approach using the Newton-Raphson method that has good efficiency and accuracy and is free from singularity and non-convergence except in a small region near the center of the Earth. 提出了一个基于迭代Newton-Raphson方法的坐标变换快速算法。除了靠近地心的一个小区域之外,新算法不存在奇异和不收敛的情况。
Reads an image from the infrared video stream image, uses the iterative thresholding algorithm binarize the image, uses the method of region mark to remove inface region. 从红外视频流图像中读取一帧图像,采用迭代式阈值分割的方法,对图像进行二值化处理,利用区域标记的方法去除非人脸区域。
And the simulation results are presented to validate that increasing the number of samples is able to improve the joint iterative detection and decoding within high SNR region, and the only paid cost is some increase in the calculation complexity. 论文研究结果表明,在高信噪比时增加采样次数,可以以一定的复杂度为代价,有效改善迭代检测性能。
Then proposed a coarse positioning algorithm using the iterative type value division algorithm, then combined with vertical projection and region connection algorithm we proposed the accurate localization algorithm. 3. 提出了采用迭代式阈值分割算法对人脸图像进行粗定位,然后结合垂直投影和区域连通算法精确定位的算法。
That iterative planning searches valuable region with high priority, thus saves computation greatly meanwhile ensures solution precision. 这种重点探索有价值区域的迭代求解方式,在保证求解精度的同时,可大大节省计算开销。
At the beginning of inversion, it needs initial model, good inversion model not only can reduce iterative times, improve efficiency, also can achieve good results. Next, I process actual data of a region by spectrum inversion. 反演的开始需要建立初始模型,好的初始模型不但可以减少迭代次数,提高效率,也能够取得好的结果。