多重分形去趋势波动分析的多重分形谱估计

传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优 于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform (DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show that the developed method has better noise suppression performance and lower speech distortion compared to the traditional speech enhancement method. )

Support for wireless communication: MIMO

抽取法产生m序列优选对，并产生与之对应的所有Gold序列；做出了Gold码的自相关与互相关函数；验证了Gold码的个数(Extraction method m sequence pairs, and generate the corresponding Gold sequence to make a Gold code autocorrelation and cross correlation function to verify the number of Gold codes)

包括了LMS算法，RLS算法实现的自适应滤波器，以及Wiener最优滤波器(Including the LMS algorithm, RLS algorithm adaptive filter, and Wiener optimal filter)

matlab图像分割程序 手动和自动分割(matlab image segmentation procedures manual and automatic segmentation)

DFT数字信号采集滤波器实例演示程序，很实用的一个小程序。(DFT filter digital signal acquisition example demo program, it is a small utility program.)

图像处理中，采用均值滤波的方法对所选取的图像在MATLAB环境中进行处理 (Image processing, using the method of average filtering of the selected image in the MATLAB environment to deal with)

微粒群(PSO)优化算法进行图像匹配程序，MATLAB版。(Particle swarm optimization (PSO) algorithm for optimized image matching program, MATLAB version.)

说明：  信道编码用于计算信道的容量，计算起来比较简单迅速。(Channel coding is used to calculate the channel capacity, calculate simple fast.)

老外写的关于OFDM调制，发送，接受仿真的论文，并附有源程序，对做OFDM仿真的初学者朋友很有帮助(Written by a foreigner on the OFDM modulation, sent, received papers Simulation, along with source code for beginners to do OFDM simulation Friend helpful)