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The spectrum sensing of a wideband frequency range is studied by dividing it int...
Cognitive radio frequency spectrum detection-The spectrum sensing of a wideband frequency range is studied by dividing it into multiple subbands.
It is assumed that in each subband either a primary user (PU) is active or absent in a additive white Gaussian
noise environment with an unknown variance. It is also assumed that at least a minimum given number of
subbands are vacant of PUs. In this multiple interrelated hypothesis testing problem, the noise variance is
estimated and a generalised likelihood ratio detector is proposed to identify possible spectrum holes at a
secondary user (SU). Provided that it is known that a specific PU can occupy a subset of subbands
simultaneously, a grouping algorithm which allows faster spectrum sensing is proposed. The collaboration of
multiple SUs can also be considered in order to enhance the detection performance. The collaborative
algorithms are compared in terms of the required exchange information among SUs in some collaboration
- 2022-04-01 19:11:06下载
- 积分：1
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vc 傅立叶变换
应用背景图像正交变换 ， 傅立叶变换优化，在对图像进行傅里叶变换变换是复杂度为O(n^2)，当n很大时 此算法可以优化关键技术采用FFT和IFFT进行傅立叶变换 ，大大缩减运行时间 节约系统资源 傅立叶定理 卷积定理
- 2022-08-06 22:14:23下载
- 积分：1
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结合PCA+LDA的图像识别算法VC封装类,PCA（主元素分析，光照敏感）,可用于人脸识别的初级算法...
结合PCA+LDA的图像识别算法VC封装类,PCA（主元素分析，光照敏感）,可用于人脸识别的初级算法-combination of image recognition algorithm VC Packaging category, PCA (principal component analysis, Light-sensitive), can be used for the initial face recognition algorithm
- 2023-01-26 08:10:04下载
- 积分：1
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我们平常玩的飞机射击类游戏，这其实很简单，在加载上图片后，实现精灵类碰撞检测，每按键一次，图片显示相应的动作，真的很简单，希望你能从这个简单的游戏获得启发...
我们平常玩的飞机射击类游戏，这其实很简单，在加载上图片后，实现精灵类碰撞检测，每按键一次，图片显示相应的动作，真的很简单，希望你能从这个简单的游戏获得启发-To play our usual type of plane shooting games, this is a very simple add-on in the picture, the type of collision detection Elven implementation, each button once, the motion picture shows, really easy, I hope you benefit from this simple game get inspired
- 2022-04-13 04:30:14下载
- 积分：1
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该算法建立了由最小二乘法,离散点曲率和离散点曲率变化和三项组成的目标函数并求出了最优控制点序列坐标,采用非线性优化方法对权因子序列进行了调整,确立了逼近误差的近...
该算法建立了由最小二乘法,离散点曲率和离散点曲率变化和三项组成的目标函数并求出了最优控制点序列坐标,采用非线性优化方法对权因子序列进行了调整,确立了逼近误差的近似表示方法,并提出了包括上述方法的循环判断流程.-The algorithm was established by the least squares method, discrete points, the curvature and the curvature change and the three discrete points consisting of the objective function and find the optimal sequence of control point coordinates, using non-linear optimization method for sequence weights have been adjusted establishes the approximation error of the approximate representation, and proposed, including the cycle of the above methods to determine flow.
- 2022-03-11 09:45:16下载
- 积分：1
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2Drawing画图程序2Drawing，主要是VC开发的2维图形的画图程序
2Drawing画图程序2Drawing，主要是VC开发的2维图形的画图程序-2Drawing 2Drawing drawing program, the development of the VC is two-dimensional graphics drawing program
- 2022-07-24 21:14:54下载
- 积分：1
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是一个绘制直线的代码，其中还有划若干条相交直线的程序
是一个绘制直线的代码，其中还有划若干条相交直线的程序-is drawing a line of code, of which there is a number of intersection linear process
- 2023-02-05 12:25:04下载
- 积分：1
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AffineTransformation computes and applies the geometric affine transformation to...
AffineTransformation computes and applies the geometric affine transformation to a 2-D image.
The program main functions are:
- Load Image: Load the image to be transformed.
- Transform Image: Computes the transformation matrix from the transformation parameters specified by the user, then it applies the transformation to the loaded image.
- Save Image: Save the transformed image.
- Quit: Exit the program.
The transformation parameters are specified by the user by editing the
values of the rotation, scale (x and y), and shear (x and y). The
translation is not icluded because it can be easily (normalized or) removed from the image by
subtracting the shape cetroid.
The affine matrix and the affinr transformation are computed using Matlab Image Processing Toolbox
functions: maketform and imtransform. So this program is only demonstrates and facilitates the computation and the applying of these functions to a 2-D image.
- 2022-01-30 20:17:04下载
- 积分：1
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用于游戏开发的工具Virtools的使用,这个工具是很出名的,可以制作强大的3D效果....
用于游戏开发的工具Virtools的使用,这个工具是很出名的,可以制作强大的3D效果.-for game development tools addressed the use of this tool is very well-known, it produced powerful 3D effects.
- 2022-08-09 05:34:39下载
- 积分：1
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ATL写的基于DirectX的 游戏引擎源代码.zip
ATL写的基于DirectX的 游戏引擎源代码.zip-ATL was based on the DirectX game engine source code. Zip
- 2022-03-26 13:13:43下载
- 积分：1
