DSSS

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

有初速度，身高，到篮筐的距离等求篮球的运动轨迹(Initial velocity, height, and distance to the basket and basketball trajectory)

说明：  color histogram, cloud histogram. got from file exchange,m not d author

介绍了matlab的各种学科工具箱，如信号处理工具箱，神经网络工具箱等(Introduced a variety of disciplines matlab toolbox, such as the Signal Processing Toolbox, Neural network toolbox, etc.)

利用blackman窗设计Ⅳ型数字带通滤波器MATLAB实现代码。(Blackman window design IV digital band-pass filter MATLAB code.)

it generates the BPSK signal

8psk modulation is done using simulink model in this document. hope u get knowledge

OFDM仿真程序，除了.m格式还有word形式的代码( There are OFDM simulation program, in addition,no only have M form of the code ,but aslo word format.)

自己写的PN码相关Matlab仿真，希望对大家有帮助。(PN code-related)

用matlab实现无线计算器的功能,以声音信号为载波，采用2ASK编码.(Using matlab wireless calculator functions, and sound signals for the carrier, using 2ASK coding.)