SCATTER

OFDM技术在无线通信中的实现 AWGN信道(OFDM technology in the realization of wireless communications in AWGN channel)

分裂场PML吸收层，模拟时谐场，在二维空间的传播。(split PML to simulate the sinsoudal wave )

提出了一种求解电磁场有限元 边界元混合法所生成的线性方程组的有效方法 ———内观 法结合多波前法.由于该线性方程组的系数是一个部分稀疏部分满填充的矩阵,为了加速求解,应用内观法将系数矩阵分为 2块,一块是有限元法形成的稀疏矩阵,另一块是边界元法生成的满阵,然后用多波前法求解稀疏矩阵方程,用高斯 约当消去法解满阵方程. 采用该方法,计算了二维多层介质柱体的雷达散射截面.计算结果表明,该方法的计算效率远远高于传统的高斯法.(Proposed for solving mixed finite element boundary element linear equations generated by an effective method of Vipassana--- a combination of multi wave front method. Since the coefficients of linear equations is a part of the sparsely populated part of the full matrix, in order to speed up the solution, application of Vipassana coefficient matrix is ​ ​ divided into two, one is the finite element method for the formation of the sparse matrix, the other is the boundary element method generates the full array, and then use the multifrontal method for solving sparse matrix equation Gauss Jordan elimination method with full matrix equation solution. use this method to calculate the two-dimensional multi-layer dielectric cylinder of the radar cross section. The results show the computational efficiency of this method is much higher than the traditional Gaussian law.)

mfcc, it helps you recognize the speech

试验模态参数的频域识别方法__导纳圆法模态参数识别(Experimental modal parameters identification method in frequency domain admittance circle method __ modal parameter identification)

LTE物理层协议，协议的TS36.211，中文协议说明(LTE protocol LTE protocol LTE protocol )

这是八阵元圆形天线阵列天线波束反时针360度扫描程序，程序执行后可见八阵元圆形天线阵列天线波束指向所设计的方向，并且按照规定的周期旋转扫描！(This is the eight circular antenna array elements array antenna beam scanner 360 degrees counterclockwise, program execution can be seen after eight circular antenna array elements array antenna beam pointing in the direction of the design, and in accordance with a predetermined cycle rotary scanning!)

利用Matlab实现语音信号的数字水印技术.利用语音获取设备获取需要传送的保密语音信号；选择用于传输保密语音信号的普通声音载体；对加入水印信息的文件进行各种滤波处理，然后再对其进行水印提取，观察其结果；(Digital watermarking technology using Matlab voice signals using voice capture device to obtain confidential voice signals to be transferred Select common vector for the transmission of confidential voice speech signal adding watermark information on a variety of filtering files, and then its watermark extraction, observe the results )

这个文档中的内容是实现OFDM系统的软件架构matlab程序(Contents of this document is the realization of OFDM system software architecture of the matlab program )

自己编的绘制koch曲线和serpinki垫的matlab小程序(Own drawing pad koch curve and the serpinki applet matlab)