envelopedet

为便于交流提高学术水平，我们应该提供一些免费的好的源代码(In order to facilitate the exchange to raise academic standards, we should provide some good free source code)

有关调制解调的全面程序包，里面的文件夹名字有点乱，但很全面，不要错过哦(For the full modem package, inside the folder name a little messy, but it is full, do not miss it)

matlab code for convolutional codes

卡尔曼滤波器代码 包括不同噪声时信号的比较(Kalman filter code including different noise signal comparison)

采用matlab编程实现的近似熵的计算。近似熵是一个从衡量时间序列复杂性的角度出发的反映信号整体特征的指标(Calculated using approximate entropy matlab programming to achieve. Approximate entropy is a sequence complexity measure of the time of departure the perspective of the indicators reflect the overall characteristics of the signal)

说明：  计算非线性光学晶体的第一类相位匹配的matlab程序(Matlab program for calculating the first kind phase matching of nonlinear optical crystals)

制作按钮。在SDK平台下运行，任意制作按钮，非长好用的(Production button. Run in the platform SDK, arbitrary production button, non-long-to-use)

cocos2dx 11种粒子效果源码,cocos2dx 11 seed particle effect source(cocos2dx 11 seed particle effect source)

Newton插值公式实例，改变插值节点个数，观察不同的插值函数的逼近效果.(Instance of the Newton interpolation formula, change the number of interpolation nodes, and observe the different interpolation function approximation.)

子空间类波达方向(Direction Of Arrival,DOA)估计算法的关键在于得到高质量的信号子空间估计。该文利用矩阵伪逆的双正交性,针对源信号不相关而其本身是色信号的情况,给出了一种新颖的DOA估计算法,它不需要知道噪声统计特性。该算法利用一组空间相关矩阵的结构化信息,能稳健而精确地估计出信号子空间,从而得到DOA的精确估计。仿真实验证实了所给算法的有效性。(The key subspace DOA (Direction Of Arrival, DOA) estimation algorithm is to get a high quality signal subspace estimation. In this paper, the use of pseudo-inverse matrix dual orthogonal signals for the source itself is not related to the case and the color signal is given a novel DOA estimation algorithm, it does not need to know the statistical properties of the noise. The algorithm uses a set of structured information in spatial correlation matrix can be robust and accurately estimate signal subspace to obtain an accurate estimate of the DOA. Simulation experiments confirmed the effectiveness of the proposed algorithm.)