huffman

根据有无固定基础设施，无线局域网又可分为BSS (Basic Service Set)和IBSS (Independent Basic Service Set)。我们要研究的ad hoc网络属于后者。假设在一个ad hoc网络中，移动节点的发射功率PTx总是恒定的。要发送数据的移动节点总是先监听信道，测量接收到的信号功率X，其中X= I + N, I为接收到的干扰，N是噪声。移动节点只有在X＜INThre时，才可以发射。式中，INThre为背景噪声门限。 在仿真中，我们规定每个移动节点的发射功率是常数，PTx = 1W；接收节点接收机的灵敏度Smin = -80 dBm；信号质量 min = 2 dB；系统的背景噪声门限INThre = 1.2e-10。 (According to the availability of fixed infrastructure, wireless local area network can be divided into BSS (Basic Service Set) and IBSS (Independent Basic Service Set). We have to study the ad hoc network belong to the latter. Assuming in an ad hoc network, mobile node s transmission power is always constant PTX. To send data to the mobile node always monitor channel, measuring the received signal power X, which X = I+ N, I was received interference, N is the noise. Mobile node only when X <INThre when it is fired. Where, INThre threshold for background noise. In the simulation, we require that each mobile node s transmission power is constant, PTx = 1W receiver node receiver sensitivity Smin =-80 dBm signal quality )

利用Matlab对通信系统仿真的基本思想和方法； 利用MATLAB的集成仿真环境Simulink对双边带幅度调制系统进行仿真 (Matlab simulation of communication systems using the basic ideas and methods integrated simulation environment using MATLAB Simulink bilateral system is simulated with amplitude modulation )

R. K. Martin, C. R. Johnson, Jr., M. Ding, and B. L. Evans, "Infinite Length Results for Channel Shortening Equalizers," Proc. The IV IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Rome, Italy, June 2003.

说明：  MATLAB程序，Writing Fast MATLAB Code(MATLAB program, Writing Fast MATLAB Code)

基于matlab的OFDM仿真程序； 我再论坛找了很多OFDM的代码和文章,但总有遗患,为什么呢原因是大部分只有简单的映射,IDFTDFT变换等等,但主要的同步和信道估计去没有人提出来,甚至做出来.. 现在我终于找到了一份,它以FUNCTION的形式,再现了OFDM映射,IDFTDFT,同步(时间频率同步)和信道估计,以及频率偏移的估计等一系列代码.(Based on the OFDM matlab simulation program I' ll find a lot of forums and articles OFDM code, but there are left suffering, why because most only simple mapping, IDFTDFT transformation, etc., but the main synchronization and channel estimation to no one proposed, and even do it .. and now I finally found a copy of it in the form FUNCTION, Reproduction of OFDM mapping, IDFTDFT, synchronous (time and frequency synchronization) and channel estimation, and the estimated frequency offset a series of code.)

MATLAB经典案例系列视频,数据传递和多窗口编程(MATLAB classic case series video, data transfer and multi window programming)

Computation of the frequency response of the low- and high-pass filters that generate the orthonormal or semi-orthonormal (B-spline or dual) fractional splines of degree alpha, and of type + (causal), - (anticausal) or * (symmetric).(fract spline filters)

说明：  LBG算法 简单的一个描述LBG算法的例子(LBG algorithm, a simple example to describe LBG algorithm)

也是利用最小二乘法对椭圆进行数据拟合，不过考虑到图像大小问题，这里只选取100个边缘点，点的个数也可以自行设置。(Ellipse is the least square method of data fitting, but taking into account the size of the image, here select only edge points 100, the number of points you can set your own.)

灰色预测 可以在数学建模中使用 可以运行。 (Grey prediction)