LRFF

this code describes hiding message, steganography based

Network coding simulation using MATLAB

2. 设 是窄带信号，定义 是在 区间上均匀分布的随机相位。 是寬带信号，它是一个零均值、方差为1的白噪音信号e(n)激励一个线性滤波器而产生，其差分方程为 。 1） 计算 和 各自的自相关函数，并画出其函数图形。根据此选择合适的延时，以实现谱线增强。 2） 产生一个 序列。选择合适的 值。让 通过谱线增强器。画出输出信号 和误差信号e(n)的波形，并分别与 和 比较。 (Computer Experiments: 1. Consider an AR process x(n) defined by the difference equation where v(n) is an additive white noise of zero mean and variance .The AR parameters and are both real valued: a) Calculate the noise variance such that the AR process x(n) has unit variance .Hence , generate different realization of the process x (n). b) Given the input x (n), an LMS filter of length M = 2 is used to estimate the unknown AR parameters and . The step size is assigned the value 0.05. Compute and plot the ensemble average curve of and by averaging the value of parameters and over an ensemble of 100 different realization of the filter. Calculate the time constant according to the experiment results and compare with the corresponded theoretical value. c) For one realization of the LMS filter, compute the prediction error And the two tap-weight errors and Using power spectral plots of , show that)

mimo with awgn channel bpsk and qpsk

使用传统的几种算法来形成自适应波束，包括最大信噪比准则（MSNR），线性约束最小方差（LCMV）和最小均方误差准则（MMSE）等。(The traditional algorithms are used to form adaptive beams, including maximum signal-to-noise ratio (MSNR), linear constrained minimum variance (LCMV), and minimum mean square error criterion (MMSE).)

一个用于演示游程编码的Matlab程序，具有编码和解码功能(A Matlab program for the demonstration of the run-length coding , with the encoding and decoding functions)

对于无源雷达定位系统，采用测向方法对目标定位，并对定位精度进行了分析。(For passive radar location system, using the direction finding method of orientation, and the positioning precision is analyzed.)

说明：  利用盲源分离分离混合信号，此算法为FastICA,运行稳定(Separation of mixed signals by blind source separation algorithm)

Krnel wiener filter (algorithm in matlab)

helical gear. it solution of helical gear problem