2 手指 rake 接收机频率选择性瑞利衰落

自编程序产生FSK信号的函数源代码，可以实现函数调用，载波频率可以修改的！(FSK signal generated by ourselves to a function of the source code, function call, the carrier frequency can be modified!)

利用PID控制算法实现曲线的拟合跟踪，分别对阶跃曲线和正弦曲线进行控制，并比较拟合的误差曲线(Using the PID control algorithm curve fitting tracking, respectively, on the step and sinusoidal curve control, and compare the error curve fitting)

DSSSmatlab代码 开发流程，开发流程(DSSSmatlab code)

里面的程序与《matlab43个神经网络分析》这本书配套，学习起来更加方面快捷，建议先运行程序再看书上的讲解，效果更好，方便初学者对于matlab神经网络的学习，里面包含BP神经网络，遗传算法结合的BP神经网络，SVM等算法，方便好用。

是一篇pdf文档 。主要讲了，matlab中的GUI模块，得一些常见错误和解决办法。(Is a PDF document. Mainly about, the GUI module in MATLAB, some common errors and solutions. )

本文采用的是先对脉搏波进行经验模态分解，产生一组内在的模函数，每一种模态对应一种物理状态，之后使用ＨＴ得出瞬时的频率和振幅，进而得到边际谱-In this paper, is the first of the pulse wave empirical mode decomposition, resulting in a set of intrinsic mode function, each mode corresponds to a physical state, followed by the use of HT derived instantaneous frequency and amplitude, and thus to be marginal spectrum

对于一幅输入图像，将产生一幅输出图像，输出图像的每个像素点的灰度值由输入像素点决定，将感兴趣特征的对比度扩展使之占据可显示灰度级的更大部分。使一输入图像转换为在每一灰度级上都有相同的像素点数，均衡化会减少灰度级数。大多数自然图像由于其灰度值分布集中在较窄的范围之内，引起图像细节不够清楚。采用直方图修正后可使图像的灰度间距拉大或使灰度均匀分布，从而增大了反差，使图像细节清楚，达到增强的目的。(For an input image, will produce an output image, the output image gray value of each pixel from the input pixel decided to expand interest in the contrast of features to make it account for more gray levels can be displayed most. Make an input image is converted to grayscale in each pixel have the same points, equalization will reduce the gray series. Most natural images because of their gray value distribution concentrated in a narrow range, causing the image detail is not clear enough. Make the image histogram revised by the gray space widening or so gray uniform distribution, thereby increasing the contrast between the image details clear objective to achieve enhanced.)

一个lms算法的matlab仿真程序。实现曲线输出。有很好的参考价值。(An LMS algorithm matlab simulation program. Realize the output curve. Have a very good reference value.)

matlab编写的PCM脉冲编码调制simulink仿真模型，包含对不同频率语音信号的仿真。(Matlab prepared PCM pulse code modulation simulink simulation model, including the simulation of different frequencies of speech signals.)

实现六自由度运动学逆解算法，光纤无线通信系统中传输性能的研究，这是第二能量熵的matlab代码，一种噪声辅助数据分析方法,计算两个矩阵之间的欧氏距离，基于SVPWM的三电平逆变的matlab仿真。