ccfx

用MATLAB编写的读取视频图片的程序。(Using MATLAB program for reading video picture.)

pam算法，能够帮助用户理解pam算法的思想，更好的理解该聚类思想(PAM algorithm, can help users understand the thoughts of PAM algorithm, a better understanding of the clustering thought)

衰落信道参数包括多径扩展和多普勒扩展。时不变的多径扩展相当于一个延时抽头滤波器，而多普勒扩展要注意多普勒功率谱密度，通常使用Jakes功率谱、高斯、均匀功率谱。( The fading channel parameters include multipath spreading and Doppler spreading. The time-invariant multipath extension is equivalent to a delay-tap filter, while the Doppler spread should pay attention to Doppler power spectral density, usually using Jakes power spectrum, Gaussian, and uniform power spectrum.)

说明：  matlab环境下用AR谱估计算法实现AR模型谱估计(matlab environment AR spectrum estimation algorithm using AR model spectrum estimation implementation)

无约束最优控制无约束最优控制无约束最优控制无约束最优控制(wuyueshuzuiyoukongzhi)

QPSK信号在加入白高斯噪声（AWGN）后，用matlab进行仿真，并绘制了误码率图形。( The QPSK signal after joining the white gaussian noise (AWGN), carries on the simulation with matlab, and has drawn up the error rate graph. )

MMA盲均衡算法，上传供交流，希望大家提供宝贵的意见(MMA blind equalization algorithm, uploads for the exchange, we hope to provide valuable advice)

Stop-and-wait ARQ is a method used in telecommunications to send information between two connected devices. It ensures that information is not lost due to dropped packets and that packets are received in the correct order. It is the simplest kind of automatic repeat-request (ARQ) method. A stop-and-wait ARQ sender sends one frame at a time it is a special case of the general sliding window protocol with both transmit and receive window sizes equal to 1. After sending each frame, the sender doesn t send any further frames until it receives an acknowledgement (ACK) signal. After receiving a good frame, the receiver sends an ACK. If the ACK does not reach the sender before a certain time, known as the timeout, the sender sends the same frame again.

说明：  采用10阵元的阵元间距为1/2波长的均匀线阵，估计两个不相干的信号源的波达方向。假设信号 源分别来自 和 方向，信噪比分别为10dB和20dB；并假设样本数为100。使用music算法实现DOA估计(music algorithm used for doa estimation)

说明：  MATLAB符号运算及其应用。本书是来专门讨论符号运算的。在符号运算中，科学计算的对象从具体的某一数值 抽象化为一般的文字符号，即符号对象。运算时，无须事先对变量赋值，运算所得结果 以标准的符号形式表达，即函数关系式。无论多么复杂，都给出直观的符号形式的解析 解。各种重要函数关系表达式有的就成为不同学科的公式、定理或定律。与数值运算一 样，符号运算也是MATLAB 的一个极其重要的组成部分。(Symbolic operation of MATLAB and its application)