Asymmetric transmission

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.

Soft-Switching DC/DC Converter With a Full ZVS Range simulink model.

最速下降法和牛顿法解决最优化问题 dampnm.m - 牛顿法 grad.m - 最速下降法(The steepest descent method and Newton' s method to solve optimization problems dampnm.m- Newton grad.m- the steepest descent method)

捷联惯导的解算程序，大家一起学习交流，有疑问的可以联系我。(The calculating program of sins, we learn together.)

合成孔径雷达（SAR)目标成像仿真，粒子图像分割及匹配均为自行编制的子例程，isodata 迭代自组织的数据分析，时间序列数据分析中的梅林变换工具，一些自适应信号处理的算法，关于神经网络控制，IMC-PID是利用内模控制原理来对PID参数进行计算。( Synthetic Aperture Radar (SAR) imaging simulation target, Particle image segmentation and matching subroutines themselves are prepared, Isodata iterative self-organizing data analysis, Time series data analysis Mellin transform tool, Some adaptive signal processing algorithms, On neural network control, The IMC- PID is using the internal model control principle for PID parameters is calculated.)

本资料包包含了系统的matlab建模用算法(This pack contains the system matlab modeling algorithm used)

THE FEATURE IS BILINEAR-INTERPOLATE THE SOUCE-IMAGE TO GET A DESTINATE-IMAGE

3D shape reconstruction matlab code. It used shape from defocus technique with divergence. You can reconstruct 3D shape with only two different depth images.

Z源逆变器最大升压控制仿真模块，实现Z源逆变器的最大升压控制。(MAx boost control)

有关使用matlab下使用hough函数实现直线检测的方法，并可对任意两条直线计算两者的夹角(using hough function detect the straight lines under the Matlab)