CCC_PID4_LOAD0

matlabsimulink通信系统建模与仿真实例分析（源代码模型）对通信学习非常有用！(matlabsimulink System Modeling and simulation analysis (source code model) is very useful for communication learning!)

) Compression using huffman code -with a number of bits k per code word -provide huffman table Huffman coding is optimal for a symbol-by-symbol coding with a known input probability distribution.This technique uses a variable-length code table for encoding a source symbol. The table is derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol .Huffman coding uses a specific method for representing each symbol, resulting in a prefix code that expresses the most common characters using shorter strings of bits than those used for less common source symbols.The Huffman coding is a procedure to generate a binary code tree. () Compression using huffman code -with a number of bits k per code word -provide huffman table Huffman coding is optimal for a symbol-by-symbol coding with a known input probability distribution.This technique uses a variable-length code table for encoding a source symbol. The table is derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol .Huffman coding uses a specific method for representing each symbol, resulting in a prefix code that expresses the most common characters using shorter strings of bits than those used for less common source symbols.The Huffman coding is a procedure to generate a binary code tree. )

用于数字图像处理的图像反转和变换的程序，实测可用(For digital image processing and conversion of the image reversal process, the measured available)

用matlab仿真实现的雷达图像的几何畸变校正过程(using Matlab Simulation of radar images of the geometric distortion correction process)

用基于 Matlab 的小容量 FFT (比如 256×256)程序，将取样窗口划分为 若干个全等的小矩形,对每个小矩形内离散点的复振幅作 FFT 变换,然后将所有变 换结果叠加，再乘以复数相位因子,相当于对整个物面上点进行菲涅耳衍射计算， 利用这种方法可以迅速的实现高精度的轴对称傍轴光学系统中的激光衍射计算 (With a small volume based on Matlab FFT (eg 256 × 256) procedure to sample window divided into a number of small identical rectangles, each small rectangle of discrete points within the complex amplitude for the FFT transform, and then transform the results of all the superposition multiplied by the complex phase factor, the equivalent point on the object plane Fresnel diffraction calculation, the use of this method can rapidly achieve high-precision optical system axis of symmetry in the paraxial calculation of laser diffraction)

implementation ols sparse algorithm

MATLAB工具箱，可以让你方便调用运算，节省必要的时间(MATLAB toolbox, allows you to call operator convenience, the necessary savings time)

利用BPSK, DBPSK, QPSK, OQPSK, 16QAM, PAM， 信号进行基带，通带调制解调，分析频域，时域波形，误码率等(Using BPSK, DBPSK, QPSK, OQPSK, 16QAM, PAM for modulation and demodulation. Analyzing the spectrum, wave forms, and bit error rate )

Matlab code for theoretical and experimantal BER for BPSK in AWGN

lorenz模型的敏感性试验（有图显示）：说明了lorenz模型的非线性和混沌性。(lorenz model sensitivity test (with map display): Description of the lorenz model nonlinearity and chaos.)