gillespie

用龙贝格积分法计算积分的程序，matlab语言编写，希望能对大家有用。(Romberg integration method with integral calculation procedures, matlab language, hoping to be useful to everyone.)

QPSK modulation with awgn channel

This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model. A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-correlation. alpha_n = frac{pi(n-0.5)}{2M} and eta_n = frac{pi n}{M}, results in the following model, usually termed the Dent model or the modified Jakes model: R(t,k) = sqrt{frac{2}{M}} sum_{n=1}^{M} A_k(n)left( cos{eta_n} + jsin{eta_n} ight)cos{left(2pi f_d t cos{alpha_n} + heta_{n} ight)}. The weighting functions A_k(n) are the kth Walsh–Hadamard sequence in n. Since these have zero cross-correlation by design, this model results in uncorrelated waveforms. The phases ,! heta_{n} are initialized randomly and have no effect on the correlation properties. Matlab fast Walsh-Hadamard transform function is used to efficiently generate samples using this model.

obtain the constellation diagrams and BER vs SNR curve of Quadrature Phase Shift Keying

二自由度悬架系统在MATLAB/SIMULIN中建立模型，可以的到不同输入下所需的输出(Two degrees suspension system model in the MATLAB/SIMULIN, can to the desired output under different input)

应用KNN算法解决0到9的手写数字识别问题，效果在90 以上，内部有两个数据集，一个为训练集（7291个数据），一个为测试数据（2791个数据），程序采用MATLAB编写，另附有文档，程序简洁易懂(Application KNN algorithm to solve 0-9 handwritten digit recognition problem, the effect is more than 90 , the inside has two data sets, one for the training set (7291 data), a test data (2791 data), the program written using MATLAB , attached a document, the program is simple and easy to understand)

内螺旋覆盖搜索的一个算法实现，运行为plotdmap（a,b,c,d）a,b,c,d为数字，a,b为栅格地图的长宽，c为搜索目标的数量，位置自动随机出现杂地图上，d为搜索车辆的数量，位置分布在地图最外围。(Cover a spiral search algorithm, run for the plotdmap (a, b, c, d) a, b, c, d for the number, a, b for the grid map of the length and width, c is the number of search targets, location Auto randomly mixed map, d the number of vehicles for the search, location map of the distribution in the outermost.)

MIMO系统容量仿真的MATLAB程序，注解详细(capacity of MIMO system using MATLAB)

均匀线列阵波束形成，使用契比雪夫等旁瓣加权方式(chebshev different sidelobe)

通过比较两个music算法，得出哪一个实用性比较好(Music by comparing the two algorithms, which reached a relatively good practicality)