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采用平面波展开法求解二维光子晶体能带，有正方形和六边形(Plane wave expansion method for solving two-dimensional photonic crystal band)

kalman filter algorithm

calculate mel frequency of a signal

数字信号处理理论、算法与实现的相关MATLAB程序,是清华经典教程的配套程序.(digital signal processing theory, algorithms and implementation of procedures related to MATLAB, Tsinghua is the classic guide to the matching procedures.)

to read mps file in matlab

echo cancellation adaptive filter

ch3_1_1：嵌套使用图像代数函数 ch3_1_2：两幅图像相加 ch3_1_3：图像与常数相加 ch3_1_4：两幅图像相减 ch3_1_5：两幅图像相乘 ch3_1_6：图像除以常数[两幅图像相除ch3_2_1：图像缩放 ch3_2_2：图像旋转 ch3_2_3：图像剪切 ch3_2_4：生成和应用仿射变换 ch3_2_5：findbounds函数的应用 ch3_2_6：makeresampler函数的应用ch3_2_7：投影变换 ch3_3_1：计算图像的局部标准差 ch3_3_2：计算输入图像的3×3邻域像素值的最大值（§3.3.2） 根据指定的坐标选择一个六边形区域 按灰度分割图像中的目标 函数poly2mask的调用格式 对指定区域进行锐化滤波 填充指定的区域 (ch3_1_1: nested function using the image algebra ch3_1_2: the sum of two images ch3_1_3: Image and constant sum ch3_1_4: subtract two images ch3_1_5: two images multiplied ch3_1_6: image divided by the constant [two images division] ch3_2_1: image scaling ch3_2_2: Image Rotation ch3_2_3: image shear ch3_2_4: Generation and application of affine transformation ch3_2_5: findbounds function application ch3_2_6: makeresampler function application ch3_2_7: projection transformation ch3_3_1: Calculation of the local standard deviation image ch3_3_2: Calculation of the input image 3 × 3 neighborhood of the maximum pixel value [§ 3.3.2] in accordance with the designated coordinates to select a hexagonal region segmentation by gray-scale image of the objective function calls poly2mask format designated area sharpening filter to fill the designated regional)

非线性方程求根 包括二分法、牛顿迭代法的matlab程序。(Root including nonlinear equations dichotomy of Newton iteration of Matlab procedures.)

说明：  BPSK调制解调过程，利用映射完成BPSK调制(BPSK modulation and demodulation process, using BPSK modulation mapping completed)

OFDM中的关于映射器的个人设计的MATLAB的算法，比较经典的 ！(OFDM on the mapping of individual design MATLAB algorithm, more classic!)