dct_dwt_transform

We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.

说明：  数据挖掘中计算JS距离，在matlab环境下的源代码(JS calculated from data mining, environment in the source code matlab)

对粒子群算法改进的算法，其各性能有很好的改进(Improved particle swarm optimization algorithm, its performance is very good improvement)

参数为：载波频率f0为20MHz，采样频率为4倍f0，脉宽为1us ，脉冲周期为20us 。其中：(Parameters: carrier frequency f0 is 20MHz, the sampling frequency is 4 times f0, a pulse width of 1us, the pulse period is 20us. Of which:)

五维正向云发生器的matlab编码~~~~(Five-dimensional forward cloud generator)

Wave Player With Effects And Analysis

MATLAB的基本语法，介绍了matlab的基本语法和操作，对初学者有帮助(MATLAB basic grammar, introduced the basic syntax and operation MATLAB, helpful for beginners )

说明：  欧洲winner计划里建立的MIMO 空间信道模型。可用于MIMO仿真。(The European winner in the establishment of MIMO space program channel model. Simulation can be used for MIMO.)

matlab code for image segmentation using a new method multivariate technique

low pass filter design using matlab