shuiguotezhengtiqu

FM信号的产生与接收,给定调制信号和载波信号进行信号调制，绘制频谱并且解调已调信号(FM modulation simulator)

想保留的成分为cos(2*π*n/3) 带通滤波器，滤除1+cos(2*π*n/3) 的成分，即想保留的成分为cos(π*n/4) 带阻滤波器，滤除cos(π*n/4) 的成分，(Want to keep the ingredients for the cos (2* π* n/3) band-pass filter, filter 1+ Cos (2* π* n/3) of the composition, that is, want to keep the ingredients of cos (π* n/4 ) band-stop filter, filter cos (π* n/4) of the composition,)

introduction about Matlab, and how to write matlab code

潮汐调和分析，用于海洋专业，分析各分潮潮汐调和常数。(Tidal harmonic analysis for marine professionals to analyze the sub-tidal tidal harmonic constants.)

各种类型的时频分析，包括科恩，加布，短时傅里叶变换(Various types of time-frequency analysis, including Cohen, Gabe, short time Fourier transform)

信号处理，关于信号处理的emd方法。进行去噪和自动识别。(Signal processing, signal processing emd on the method. For denoising and automatic identification.)

bi-linear Filter. Circular Convolution of two sequences using DFT and IDFT. Discrete Fourier Transform (DFT) of the sequence

这是一个火车票分配问题（只有X是未知的） 假设初始座位数为N 分配给AB，BC，AC的座位数量为（xAB,xBC,xAC） 假设在时间t还剩余的A-B,B-C的可售座位数为（a,b） 三个区段的需求DAB,DBC,DAC,是独立的随机变量（也可以给确定的值），其价格分别为（fAB，fBC，fAC）(This is a train ticket assignment problem (only X is unknown). Suppose the initial number of seats is N The number of seats allocated to AB, BC and AC is (xAB, xBC, xAC). Assuming that the remaining A-B in time t remains, the number of seats available for sale is B-C (a, b). Demand DAB, DBC and DAC in three sectors are independent random variables (which can also be given a fixed value), and their prices are (fAB, fBC, fAC) respectively.)

一般路径损耗模型分为自由空间传播模型和对数距离路径损耗模型，本程序建立以上模型。(Generally divided into free space path loss model propagation model and logarithmic distance path loss model, the program to build more models.)

a technique for filtering signals. it is a m.file