dierzhang

simulink中直扩，跳频的实现方案，其中有3种不同的调制方式，和跳频点设计。(simulink in DSSS, frequency hopping implementation proposals, including three different modulation and frequency hopping point design.)

使用DC算法求解非凸函数的最优化问题。可以确保局部最优解，有时收敛到全局最优(DC algorithm using optimization problem of non-convex function. Ensure local optima, sometimes converge to the global optimum)

用极限稀疏矩阵对图像分类，该方法快速简单，代码少，效果好(An ultimate sparse matrix for image classification, the process quick and easy, less code, the effect is good)

试用zmapping函数实现的高通滤波器(Use zmapping function to achieve the high pass filter)

C/C++环境下BPSK调制信号在高斯信道下的性能仿真(BPSK modulation signal performance simulation in the Gaussian channel under C/C++ environment)

Hilbert缝隙天线的频率可重构设计 (Hilbert slot antenna frequency reconfigurable design)

WSN simulator based on matlab

给定初始条件和常量，运用matlab函数ode45对酶促反应进行求解，同时确定反应达到99.9 底物转化率所需要的时间。(A given initial conditions, and constants, the enzymatic reaction is solved using matlab ode45 function, at the same time to determine the reaction substrate conversion the time required to 99.9 . )

A paper describes the introduction and implementation of morse code .an simple example hase been taken by encrypting your name into morse code (audio) and reverse process also implemented.

如何计算矩阵数据的协方差矩阵。还有在什么情况下只能计算均值、方差，而不能计算协方差，什么情下，只能计算协方差，但不能计算协方差矩阵。(How to calculate the matrix data covariance matrix. And under what circumstances can only calculation mean, variance, and not calculation covariance, what feeling, can only calculation covariance, but not calculation covariance matrix.)