dd_tools_1_6_1

绘图,关于图像的圆形绘制，使用MATLAB绘图函数，自定义函数绘制圆形图像(circle)

adaptive spectrum sensing using SNAR comparioson and relative doppler shift (effect) between primary and secondary user

ofdm的盲同步，很好的文章，需要的就看看吧(OFDM Blind Carrier Offset Estimation ESPRIT)

说明：  随机共振的弱信号检测，运用朗格万方程进行MATLAB的仿真(stochasitc resouance using for detecting the weaken signals,based on longawan function)

it s a matlab code.for genetic algorithm.

a general ICP laser location algrithom with the laser data attached

基于维特比译码算法的BPSK解调方式，survivor_state是一个矩阵，它显示了通过网格的最优路径，这个矩阵通过一个单独的函数metric(x,y)给出，这个算法既能用于硬判决译码也能用于软判决译码。 (BPSK demodulation method based on viterbi decoding algorithm, survivor_state is a matrix, the optimal path of it shows through the grid, the metric matrix through a separate function (x, y), the algorithm can not only used for decoding hard decision can also be used to the soft decision decoding. )

说明：  支持向量机入门，以精简的语言描述支持向量机算法的原理和功能。(Support vector machine entry, in order to streamline the language to describe the principle of support vector machine algorithm and function.)

运用MMSE方法的波束形成，对空间信号起滤波作用(MMSE method for beamforming)

这是matlab课本的对应的习题解答 用于学习和交流只用 请勿用做非法用途(this is the answer of some question in the book matlab,only for study and communication )