pls

The spectrum sensing problem has gained new aspects with cognitive radio and opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented. Various aspects of spectrum sensing problem are studied from a cognitive radio perspective and multi-dimensional spectrum sensing concept is introduced. Challenges associated with spectrum sensing are given and enabling spectrum sensing methods are reviewed. The paper explains the cooperative sensing concept and its various forms. External sensing algorithms and other alternative sensing methods are discussed. Furthermore, statistical modeling of network traffic and utilization of these models for prediction of primary user behavior is studied. Finally, sensing features of some current wireless standards are given.

this code of matlab finds the roots of equation by gauss elimination mthod

hrrp，svm，利用支持向量机分类识别一维距离像的飞机目标，程序详细，可作为例程学习，望有帮助(HRRP, SVM, using support vector machine (SVM) classification recognition as a d distance of aircraft target, procedures detailed, can be used as an example ChengXueXi, hope have help )

自再现模形成的模拟程序，可以通过改变迭代次数观察自再现模的形成过程(The formation of self-reproduction mode simulation program can be observed by changing the number of iterations the formation of self-reproduction model)

遗传算法用在TSP问题上的MATLAB程序，很好用的。大家可以下载看看(Genetic algorithm used in the TSP issues MATLAB program, a good use. You can download to see)

在matlab下编程，实现对不同生硬的识别，效果非常好，能识别差别很小的不同声音。(At under matlab programming, implementation of different identification blunt, very good results to identify small differences in different voices.)

毕设，圆拟合程序，使用最小二乘法。 输出圆心，半径。(Picasso, circle fitting procedures set, using least-square method. Output circle, radius.)

单脉冲扩频角跟踪仿真程序，适用于单脉冲雷达接收机。(Single pulse spreading angle tracking simulation program for single pulse radar receiver.)

经典MATLAB算法，插值计算，拟合，绘图等(Classic MATLAB algorithms, interpolation, fitting, drawings, etc.)

matlab 画地图，非常实用，有需要的可以下载过去！(very strong！)