执行 16 QAM 基带通信系统

实现扩频CDMA系统的仿真，并实现不同用户数下误码率的输出(can present the simulation of dsCDMA)

说明：  针对低信噪比环境下基于能零比的端点检测方法准确率低的问题,提出了一种结合谱减法和短时零熵法的端点检测方法。首先通过功率谱减法对带噪语音进行降噪处理,然后结合短时平均过零率特征与谱熵特征,构造出一种新的语音参数,即短时零熵,最后运用双门限算法进行端点检测。实验结果表明该方法在复杂噪声环境下具有良好的端点检测性能,降低了检测的误判率。(To solve the problem of low accuracy of endpoint detection method based on energy zero ratio in low SNR environment, an endpoint detection method combining spectral subtraction and Short-term zero entropy method is proposed. Firstly, the noise is reduced by power spectrum subtraction, then a new speech parameter, short-time zero entropy, is constructed by combining the short-time average zero crossing rate and spectral entropy. Finally, the double threshold algorithm is used for endpoint detection. The experimental results show that this method has good performance of endpoint detection in complex noise environment, and reduces the rate of detection error.)

一维线阵的方向图，可以很方便在程序中更改参数(One-dimensional linear array pattern,you can easily change the parameters in the program)

Matlab applications it is often necessary to create vectors, to delete elements of given vectors, to substitute elements in given vectors, to append vectors or to insert a given vector into another vector. All these methods are discussed in this short tutorial. The corresponding m-files are available.

语音信号的lpc分析，该程序实现了与语音预测器的阶数与预测残差能量的关系(The speech signal LPC analysis, the program with the order of the prediction residual energy of the speech predictor)

efg for 2d timoshenko beam

针对轨道动力学，模拟轨道不平顺的matlab编程，对轨道增加不平顺性，美国六级谱(Addition of track irregularity)

image segmentation based on max-min flow based on graph theory.

使用metlab生产正弦波和三角波的采样值，供vhdl等语言调用来产生波形(use metlab production sine wave and triangular wave of sampling, for languages such as call vhdl to generate waveforms)

motion blur restoration, in this .m file motion blur restoration with CLS and wiener algorithms have been done