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基于小波分析的图像边缘检测方法（matlab程序）(the edge detecting method of the image based on wavelet transform theory )

power_switching_power_supply.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_switching_power_supply.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

高斯信道下QPSK仿真程序，显示了QPSK在高斯信道下误码率和信噪比的关系。(Gaussian channel under QPSK simulation program shows the relationship between QPSK Gaussian channel BER and SNR.)

压缩编码与解码程序，可以压缩字符型文件，且含有一个测试文件(Compression coding and decoding process)

检验线性方程组是否可求，用换行法求解线性方程组(Inspection linear equations can be asked whether, with a line break method is used to solve the linear equations )

matlab中运用hough变换，设定恰当的阈值，将超过阈值的点在三维空间标示出来&将三维参数矩阵根据半径的不同做成不同的帧，制作成视频(hough transform matlab in use, set the appropriate threshold, will exceed the threshold point in three-dimensional space marked out & three-dimensional parameter matrix made of different frames depending on the radius, made into video)

说明：  可以实现一种也用m序列与walsh序列复合而成的复合序列的生成。(Can also realize an m sequence and walsh composite sequence from the generation of the composite sequence.)

说明：  WiMAX的COST207信道matlab代码(WiMAX the COST207 channel matlab code)

preconjgrad：预处理共轭梯度法求线性方程组Ax=b的解 conjgrad：共轭梯度法求线性方程组Ax=b的解 twostep:两部迭代法求线性方程组Ax=b的解 fastdown:快速下降法求线性方程组Ax=b的解(preconjgrad: preconditioned conjugate gradient method for solving linear equations Ax = b solution conjgrad: conjugate gradient method for solving linear equations Ax = b solution twostep: Two iterative methods for solving linear equations Ax = b, Solution fastdown: rapid descent method for solving linear equations Ax = b solution)

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