test16qam

LEACH protocol code developed using Matlab

介绍了卷积码的特点以及卷积码的编码和解码, 讨论了加入交织后的对卷积编码的误码率的改 善情况, 并(Describes the characteristics of convolutional codes, and convolutional code encoding and decoding, after the discussion by adding cutting the error rate of the convolutional coding to improve the situation and)

2维小波变换经典程序-此示意程序用DWT实现二维小波变换(2-dimensional wavelet transform classic program- this indicated the procedure using DWT realization of two-dimensional wavelet transform)

Its an IEEE paper on Harmonic Mitigation in a Virtual Air Gap Variable Reactor via Control Current Modulation

CSMA/CD(1-persistent): 当有packet需要发送时： • 如检测到信道空闲，发送packet • 如检测到信道忙，一直检测信道状态，一旦信道空闲，立即发送(CSMA/CD (1-persistent): When there is packet needs to be sent when: • If the channel is detected idle, transmit packet • If the channel is detected busy channel state has been detected, once the channel is idle, transmit immediately)

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. )

digital modulation techniques

本仿真将延迟-相加法和CAPON算法做对比，分析了其分辨率的能力强弱(The simulation will be delayed- the sum method and the CAPON algorithm to do comparison, analysis of strengths and weaknesses of its resolution)

Mixed control strategy of a doubly fed induction machine

已调制信号计算其普相关密度，关于神经网络控制，有信道编码，调制，信道估计等。( Modulated signals to calculate its density Pu-related, On neural network control, Channel coding, modulation, channel estimation.)