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模态参数的时域识别方法，即在时间域内识别试验结构模态参数。(Time-domain modal parameter identification method, that is, the structure in time domain modal parameter identification experiments.)

说明：  要：分析和研究了授权用户和认知用户共享频谱的一种算法的性能。 针对阴影效应或信道深衰落时，单用户频谱感知算法无法识别是频带未被 使用还是信道处于深衰落的情况，在频谱感知功率控制算法上进行了改进， 以克服这种算法的不足。改进后的算法能有效地控制认知用户的发射功率， 避免对授权用户产生有害的干扰。仿真结果表明改(To: analysis and research of the authorized users to share spectrum users and a cognitive performance of the algorithm. For the shadow effect or deep fading channel, the single-user spectrum sensing algorithm can not identify a band or a channel has not been used in the case of deep fading, the spectrum sensing power control algorithm has been improved on, to overcome the deficiencies of this method. The improved algorithm can effectively control the cognitive user' s transmit power, to avoid harmful interference with authorized users. Simulation results show that the change)

huffman tree in matlab

说明：   该程序实现时域LMS算法，并用统计的方法仿真得出不同步长下的收敛曲线( Of the time domain LMS algorithm program implementation and use of statistical methods are not synchronized long simulation shows the convergence curve under)

说明：  关于8PSK译码的matlab小程序，简单易懂，很是好用的，有好东西相互交流(8PSK decoding matlab on a small program, easy to understand, it is easy to use, there are good things to exchange )

C语言编写P-Q分解法潮流计算程序，基于BB方案，且该程序采用基于稀疏技术的因子表法进行迭代求解，以降低存储量，提高运算速度。附有IEEE5,14,30,39,118节点系统数据及潮流结果，已验证程序的可行性。(C language PQ decomposition method flow calculation procedures, based on BB plan and carry out the program uses an iterative solution technique based on sparse factor table method to reduce the storage capacity, improve processing speed. IEEE5,14,30,39,118 node system with data and trend results verified the feasibility of the program.)

高斯平滑滤波，属于低通滤波，有效去除图像噪声。(Gaussian smoothing filter, a low pass filter effectively removes image noise.)

三阶龙格库塔，四阶龙格库塔程序，程序完善，通用性强！(The third order runge kutta, fourth order runge kutta procedures, process improvement, strong commonality. )

可用此代码直接在matlab中求功率谱密度，程序已调试过，没有问题(This code can be used directly in matlab and seek the power spectral density, the program has been debugged, there is no problem)

《MATLAB语言常用算法程序集》源程序，很全的数值算法(good for study)