watermark

说明：  应用matlab中的窗函数法设计FIR数字滤波器(Application of window function matlab design FIR digital filter)

Using Advanced Signal Processing Techniques on Ambient Vibration Records of a Structure

对于svm进行可视化，清晰地划分了分类超平面以及各个类别(Visualization for SVM, a clear division of the classification hyperplane and each category)

在一个移动通信系统中，发射信号是一个未调制的音频x(t)=cos(2πft)，其中f=f0+fi。设标称载波为f0=1GHz，并设fi =512Hz。假定移动用户在一个繁忙的高速公路上距离基站l公里处的地方，从开始从每小时60公里的速度开始，其速度（在0.01秒的时间间隔内测量）以1/2的概率随机的增加或减少1/10公里每小时。试仿真移动用户在这2s的时间间隔内所接收到的信号(及其频谱)。接收信号可以表示为： y(t)=a(t)Cos[2π(fo+f1)(t-△t)] 式中 △(t)=d(t)/c 且 a(t)=k/d2(t) 在上面的表达式中d(t)是在t时刻基站与移动用户的距离，c是光速，△(t)是传播延迟，而a(t)是信号在t时刻的衰减，并假设在这2s内a(t)是一个常数。利用复低通等效模型来进行仿真。(In a mobile communication system, the transmitted signal is an unmodulated audio x (t) = cos (2πft), where f = f0+ fi. Let nominal carrier of f0 = 1GHz, and set fi = 512Hz. Assume that mobile users on a busy motorway station l kilometers place, starting the beginning of 60 kilometers per hour, the speed (measured in 0.01 second interval) to increase the probability of a random 1/2 or reducing 1/10 km/h. Simulation test signal which the mobile subscriber in the 2s time intervals of the received (and its spectrum). The received signal can be expressed as: y (t) = a (t) Cos [2π (fo+ f1) (t- △ t)] Where △ (t) = d (t)/c And a (t) = k/d2 (t) In the above expression, d (t) at time t is a base station and a mobile user s distance, c is the speed of light, △ (t) is the propagation delay, and a (t) is the attenuation of the signal at time t, and assuming that 2s within a (t) is a constant. Using complex low-pass equivalent model for emulation.)

离散点极值寻找，它能找到一组离散点中的极值点。不同于fmax函数(Discrete points extremum looking)

通信实验中BPSK,QPSK,2FSK,16QAM调制解调仿真代码，实现调制解调和星座图的观察.(Communication experiments BPSK, QPSK, 2FSK, 16QAM modulation and demodulation simulation code that implements the modem and observation constellation.)

说明：  基于小波变换的阈值去噪，对含噪声图像进行阈值去噪(Threshold based on wavelet transform denoising of images with noise threshold denoising)

自己毕业设计一些收集和做的一些simulink模型及源码，希望对大家有帮助(Graduated from the design of their own collection and do some simulink model and source, I hope all of you help)

遗传算法（Genetic Algorithm）是模拟达尔文生物进化论的自然选择和遗传学机理的生物进化过程的计算模型，是一种通过模拟自然进化过程搜索最优解的方法。(Genetic Algorithm (Genetic Algorithm) is a simulation of natural selection and genetics of Darwinian biological evolution computational models of biological evolution, the process is a way to search the optimal solution by simulating the natural evolution.)

详细的空时分组码程序，包括2发4收和4发4收，是初学者很好的学习材料。(Detailed space-time block coding procedures, including admission and 2 fat 4 fat, 4 received 4 is a very good learning materials for beginners.)