wode

水印嵌入 扩频算法 使用了空域算法 实现水印嵌入(Watermark embedding algorithm uses the spatial spread spectrum watermark embedding algorithm)

Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a

说明：  MIMO系统中的经典的V-Blast代码，是一位博士写的，作为我的程序参考资料用的。运行过，正确无误。(MIMO system, the classic V-Blast code, written by a PhD, as my reference material used in the procedure. Run over, correct.)

signal generation using matlab

Adaline Algorithm Using Matlab

说明：  用小波分析和傅立叶变换进行信号噪声处理，并画图进行比较(Wavelet analysis and Fourier transform for signal noise processing, and drawing comparison)

解二维possion方程，利用pcg方法求解第一类边值问题(Solution the dimensional possion equation, using the pcg method for solving the First Kind Boundary)

利用幂法求矩阵特征值，属于数值解法的一种(Using power method to find eigenvalues of matrices, which is a kind of numerical solution.)

Multi-Object Particle Swarm Optimization (MOPSO)

在DOA估计中，实际测量和理论肯定存在误差，比如通道误差，阵元位置误差，我们提出一种toplitz的预校正方法。(In the DOA estimate, the actual measurement and theory certainly exist errors, such as channel error, array (position errors, we put forward a kind of toplitz or calibration methods. )