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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.

基于凸优化方法的失配滤波器设计（MAC编码信号的脉冲压缩处理）(Mismatch filter design based on a convex optimization method (MAC encoded signal of the pulse compression processing))

对原始的KMeans聚类算法进行改进，使得算法可以自动确定参数K值。(An improved KMeans clustering is proposed to determine the values of parameter K.)

发动机的simulink模型，包括节气门，进排气等等(Engine simulink model, including throttle, intake and exhaust, etc.)

this is matlab code for enetic algo

LEM-3D-MATLAB,不错的代码，希望有所帮助(Lattice Boltzmann Method )

CAR模型MATLAB程序,考虑带时变参数的CAR模型，用遗忘因子RLS估计参数(CAR MODEL PROGRAMME)

图像分类时由于扩展数据的各种函数,getRotatePatchOnOriImg_debug,main2_ex6Ps(When the image classification, due to the expansion program of positive and negative sample data sets, flip the image, the image center point to take 1,0.9,0.8 times the side length patch block, a small figure can be expanded to six times.)

MATLAB已成为多学科、多种工作平台的功能强大、界面友好、语言自然并且开放性强的大型应用软件，目前的最高版本是6.0版。本教程以6.0版为基础，从高等工科院校的数学课程出发，提供了使用MATLAB的实践性指导。本教程以教学的手段，系统详细地介绍了MATLAB在高等数学、数值分析、函数作图、线性代数、概率统计和优化理论中的应用，并配备了大量的例题，让读者能很快掌握MATLAB的运算技巧。 本教程按逻辑编排，自始至终用实例描述，既适用于初学者自学，也适用于高级MATLAB用户。可作为高等数学、数值分析、工程数学、数学建模、线性规划等课程的教学参考书，也可作为科技工作者学习和使用MATLAB的参考书，还可作为数学实验的教学用书，特别适合用作理工科大学生学习数学课程的教学辅导书。 本教程的光盘内容详尽、实例丰富：包含了MATLAB实例的源文件，函数/命令及注解，程序实例。 (err)

全面系统地总结了matlab中用于图像图形处理的命令(comprehensively and systematically summed up the images used Matlab graphics processing orders)