sift

由于实际信道中的多径和阴影效应，单个认知用户频谱感知的性能受到影响，因此需要靠不同用户间的协同频谱感知来对抗多径和阴影效应。本设计要求在文中采用一种协作机制，即两用户进行协作频谱感知，提高主用户的检测率，减少检测时间，并且得到捷变增益。要求给出仿真结果。(As the actual channel of the multi-path and shadow effect, a single user of spectrum sensing of cognitive performance are affected, it needs to depend on collaboration between different users of spectrum sensing to combat multipath and shadow effects. The design requirements in the text using a cooperation mechanism, namely, two user collaborative spectrum sensing, to improve the detection rate of the primary users, reducing detection time, and get agility gain. Required to give simulation results.)

this is the code about how to choose the best gen of the GA. it is use the roulette wheel algorithm, where the best gen will be selected randomly using this.

r=5时（级数为5）,由抽取的方法产生m序列 m序列优选对的产生，并计算了其自相关和互相关函数(m sequence generator (r=5), crosscorrelation and autocorrelation)

设计的带通滤波器方法 改变参数就行了 里面有几种方法(designed band pass filter change of parameters on a trip inside there are several ways)

basic matlab information to study simulink

cuantizacion uniforme de un archivo de audio .wav

说明：  基于R/T系数法求解计算瑞利波波速，算法被改进过的，速度很快(Based on R/T coefficient method calculation of the Rayleigh wave speed, the algorithm had been improved, very fast)

自行车轮饰物的运动轨迹。路面视为光滑曲线f(x),饰物离车轮中心距离为r,车轮半径为R。(The trajectory of the bicycle wheel accessories. Road surface as a smooth curve f (x), and accessories from wheel center distance r, the wheel radius R)

This is About MVDR beamforming techniques which matlab codes

2000年SCI上发表的两篇开创性的流行学习文章的仿真代码。关于LLE和ISOMAP的仿真程序，其中详细说明了实现的步骤。(2000 SCI published two seminal study popular articles simulation code.)