sanxiang

permutar matriz y generador de arreglo de numeros aleatorios irrepetibles

使用一篇论文提供的方程组和参数——分形仿射变换方法转换过来的MATLAB程序，画一片蕨叶。输入是起始坐标x0,y0和迭代次数——一般在几万次，十万次比较清晰。(Plotting the leaf with equations and parameters given by an essay. This method is fractal theory. The input is the location of starting points x0,y0 and the iteration times(100,000 times can produce a clear picture.))

Digital version of Fractional-Order PID Controller (DFOC) of the form: C(s) = K + Ti/s^m + Td*s^d for given sampling period Ts [sec]. For more details and help write: >> help DFOC

In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.

Adaptive filtering algorithm based on LMS (B-LMS), to fast track the process of change in channel between transmitter & receiver

特殊随机矩阵的生成，包含两个程序，一个可以随机生成行和和列和均为K的0-1矩阵，另一个可以随机生成稀疏矩阵。(Matrix generation,concluding two program,one can generate the 0-1 matrix that have the same row sum and column sum,the other can generate sparce matrix.)

Evolving factor analysis

Script for computing the BER for BPSK modulation in a Rayleigh fading channel with Alamouti Space Time Block Coding Two transmit antenna, 1 Receive antenna

Matlab计算自回归滑动平均模型参数，自回归滑动模型(Matlab autoregressive moving average model parameters)

说明：  MATLAB实现群时延，小数时延，以及整数时延的方法，已经过仿真(MATLAB group delay, the fractional time delay, and the method of integer delay has been through the simulation)