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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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二维CAD设计,比一般的都要好.值得一看,里面有四个人一个多月的心血，另加有十年编程经验的VC++老师的指导,非常难得!袁斌、徐建成、赵欣、刘钊。其中里面也包括...
二维CAD设计,比一般的都要好.值得一看,里面有四个人一个多月的心血，另加有十年编程经验的VC++老师的指导,非常难得!袁斌、徐建成、赵欣、刘钊。其中里面也包括我啦：）-2D CAD design, than the general good of all. An eye-catcher, there are four individuals for more than a month of work, plus a decade of experience in programming VC teacher"s guide, and very rare! Yuan Bin, Jiancheng, 41005, Liu Zhao. Also inside them-- including me :)
- 2022-01-31 20:37:07下载
- 积分：1
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基础DirectX技术实现，适合初学者参考
基础DirectX技术实现，适合初学者参考-Based on DirectX technology, suitable for beginners reference
- 2023-01-22 23:25:04下载
- 积分：1
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Qt绘图程序，使用QGraphicsView框架编写的绘图demo，实现了缩放，选择，移动等基本操作。
使用Qt QGraphicsView框架编写的一个绘图程序，实现了图形的创建，缩放，移动，旋转等基本操作。对于初学Qt绘图的朋友会有帮助。
- 2023-08-07 22:55:04下载
- 积分：1
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对图像进行逐点计算，并且取最大值和最小值的差值作为该点新的灰度值。
在区别边缘点和非边缘点时，首先确定一个阈值T，若图像中像素点的新
值大于该门限值，则...
对图像进行逐点计算，并且取最大值和最小值的差值作为该点新的灰度值。
在区别边缘点和非边缘点时，首先确定一个阈值T，若图像中像素点的新
值大于该门限值，则可以初步确定为边缘点，小于T的新值被判断为非边缘点.-Image point by point basis, and taking the maximum and minimum points of difference as the new gray value. Edge in the difference between point and non-edge point, first determine a threshold T, if the image of the new pixel value is greater than the threshold, you can initially identified as the edge point, the new value is less than T have been judged as non-edge point.
- 2023-03-01 03:35:03下载
- 积分：1
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数字图像水印的嵌入和提取算法
数字图像水印的嵌入和提取算法-Blind-detection digital watermarking embedding and extraction algorithm. The program is made by C language. (watermark.rar file include test image file)
- 2022-04-22 17:55:03下载
- 积分：1
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image processing software. We can see that should be used to the Ha ha.
图象处理的软件.
大家看看,应该用的着的，呵呵.-image processing software. We can see that should be used to the Ha ha.
- 2022-11-30 16:30:03下载
- 积分：1
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用遗传神经网络实现字符识别
用遗传神经网络实现字符识别-genetic neural network Character Recognition
- 2023-03-25 09:15:03下载
- 积分：1
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指纹识别源代码，研究指纹识别的人可以作为参考。
指纹识别源代码，研究指纹识别的人可以作为参考。-fingerprint recognition source code, the study of fingerprint recognition can serve as a reference.
- 2022-12-13 22:35:03下载
- 积分：1
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这是个绘制三次贝塞尔曲线的小程序,源码附上,供大家参考
这是个绘制三次贝塞尔曲线的小程序,源码附上,供大家参考-This is a Bezier curve drawing three small procedures, the source code attached for your reference
- 2023-01-02 20:35:08下载
- 积分：1
