QPSK发射机

关于功率谱估计的,周期图法,自相关法,bartlett法和welch法,还有一个复倒谱估计的代码(On the power spectrum estimation, periodogram, since the relevant law, bartlett law and Welch law, there is a Complex Cepstrum estimated code)

digital signal processing

matlab subroutine makes the global stiffnes matrix assebling of quadrilateral elements

hough变换圆检测，设置三个阈值，根据三个不同的半径检测圆的边缘(hough transform circle detection)

基于EKF的神经网络自适应在线学习算法，包含例子和文档。(We show that a hierarchical Bayesian modeling approach allows us to perform regularization in sequential learning. We identify three inference levels within this hierarchy: model selection, parameter estimation, and noise estimation. In environments where data arrive sequentially, techniques such as cross validation to achieve regularization or model selection are not possible. The Bayesian approach, with extended Kalman filtering at the parameter estimation level, allows for regularization within a minimum variance framework. A multilayer perceptron is used to generate the extended Kalman filter nonlinear measurements mapping. We describe several algorithms at the noise estimation level that allow us to implement on-line regularization.We also show the theoretical links between adaptive noise estimation in extended Kalman filtering, multiple adaptive learning rates, and multiple smoothing regularization coefficients.)

此程序主要功能是 1 画出标准零阶贝塞尔函数， 2 在估计多普勒时，接收信号的实部或者虚部的自相关函数接近于贝塞尔函数，所以画出了一条接近于贝塞尔函数的曲线图(The main function of this program is 1 shows the standard zero-order Bessel function, 2 estimate the Doppler, the autocorrelation function of the received signal or the imaginary portion of the real part close to the Bessel function, so to draw a graph of the Bessel function is close to)

改进的粒子群优化克里金模型，相较传统的克里金模型MATLAB数据包，此方法输入参数更少(Improved particle swarm optimization kriging model, compared with the traditional kriging model MATLAB data packet, this method less input parameters)

PWM整流，SPWM直接电流PI控制，调适通过，效果一般，适用于matlab7版本(PWM rectifier, SPWM direct current PI control, adaptation by the general effect applies to matlab7 version)

多输入，多输出正交频分复用 （OFDM）是 4 克和 5 克的宽带无线通信的主导空气界面。它结合了多输入、 多输出 （MIMO） 技术，通过多天线传输不同信号相乘的能力，和正交频分复用（OFDM），在无线广播信道划分成大量的间隔紧密的信道提供更可靠的通信，以高速度。1990年年代中期表明虽然 MIMO 可以使用与其他流行的空中接口如时分多址（TDMA） 和码分多址（CDMA）、 MIMO 与 OFDM 相结合是最实际更高的数据速率进行研究。 OFDM 技术是奠定了最先进的无线局域网络 (无线局域网) 和移动宽带网络标准因为它达到最高的频谱效率和，因此，提供

DUNE (Distributed and Unified Numerics Environment)，分布和统一数值解环境，是一种求解偏微分方程的基于网格的方法（PDE）的模块化的工具箱。DUNE是所有这些体现了科学计算的概念从抽象的接口设置第一次。现代C + +编程技术使同样的概念非常不同的实现使用一个非常低的开销一个共同的接口。因此，DUNE确保在科学计算的效率，并支持高性能计算应用。(DUNE (Distributed and Unified Numerics Environment), distribution and unified numerical solution of the environment, is a solution of partial differential equations of the grid-based methods (PDE) of the modular toolbox. DUNE is that all these reflect the concept of scientific computing from the abstract interface settings for the first time. Modern C++ programming techniques to the same concept is very different implementations use a very low cost of a common interface. Therefore, DUNE ensure the efficiency of scientific computing, and supports high-performance computing applications.)