ofdm_jida

模拟信号的数字化传输---增量调制系统 用SIMULINK建立简单增量调制系统的模型并进行 （3） 正弦信号 （4） 语音信号 的传输。 改变抽样频率和量化台阶大小，观察重建信号以及量化噪声信号的波形；对于语音信号主观评价声音质量的变化。 (Digitized analog signal transmission systems--- delta modulation delta modulation SIMULINK easy set up of the model system and (3) sinusoidal signal (4) transmission of voice signals. Change the sampling frequency and quantization step size, to observe the reconstruction of signal and quantization noise signal waveform for subjective evaluation of the speech signal changes in sound quality.)

说明：  4元系统规则重复累积码的仿真程序，H矩阵构造乃个(4 yuan system rules repeat accumulate code simulation program, H is a matrix structure)

通过二维图抽象的DCT变换，取前n和系数进行重构得到的图像进行显示(Two-dimensional map by abstraction of DCT, take the first coefficient n and displays the image reconstructed by)

　　车辆监测用测速雷达是依据多普勒效应原理实现的。由雷达发出一束微波，遇被测目标（车辆）时微波被反射回来，再由雷达接收反射波。如果目标相对于雷达有距离上的运动，反射波的频率将与发射频率发生差异，而这种差异的大小正比于目标与雷达的相对运动速度。于是，雷达通过检测反射波频率和发射波频率的差，就可以计算出被测车辆的移动速度。本次课程设计是利用离散付里叶变换进行频谱分析，设计数字滤波器组，并对滤波器组加窗降低副瓣，通过频域方法测量速度。(Vehicle monitoring using radar gun is based on the realization of the principle of the Doppler effect. By the radar emits a microwave, in case the measured target (vehicle) when the microwave is reflected back, and then by receiving the reflected radar waves. If the target relative to the radar on a distance of motion, the frequency of the reflected wave and the emission frequency of the difference, and this difference is proportional to the relative target and radar velocity. Thus, by detecting the reflected radar wave frequency and the frequency difference between the transmitted wave, we can calculate the movement speed of the vehicle under test. This course is designed to take advantage of the discrete Fourier transform spectral analysis, digital filter design group, and filter bank windowed lower sidelobes by frequency domain methods to measure speed.)

给出了直流电机双闭环调速系统在Matlab/simulink 下的仿真程序，是电气工程及其自动化专业毕业设计中 所能用到得MATLAB仿真。(Gives the two-loop DC motor speed control system in Matlab/simulink simulation under the procedures, graduate electrical engineering and automation design can be used in MATLAB simulation.)

道路车辆的故障诊断国际标准第一部分－－物理层(Road vehicles to international standards of fault diagnosis of the first part- the physical layer)

使用gui编写的计算器功能，与windows上计算器类似(A calculator written in GUI)

三电平空间矢量仿真，采用M函数和模块混合编写，方便向DSP移植(Three-level space vector simulation, using M functions and modules prepared by mixing to facilitate migration to the DSP)

Mean shift clustering algorithm is trying to help us for data set points clustering.

Read table from HTML file (url) to Matlab cell array.