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DSSS
实现通信抗干扰的跳频通信，希望对初学通信抗干扰的同志有所帮助(To achieve interference rejection for frequency hopping communication, hope to comrades beginner help communication interference)
- 2021-04-01 20:19:07下载
- 积分：1
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scramble
说明： 基于相邻像素间位异或的图像置乱算法,效果很好，改变图像直方图(Between the adjacent pixels based on the XOR bit of image scrambling algorithm, well, change the image histogram)
- 2008-09-21 14:41:03下载
- 积分：1
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trans_sigPnoisePinterference
根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment.
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- 2011-04-20 10:18:47下载
- 积分：1
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deepsig_grcon18
use full fie foe deep sensing book. good luck
- 2020-06-19 10:20:02下载
- 积分：1
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PSO
pso alghoritm for different function
- 2013-02-11 16:47:15下载
- 积分：1
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compare_segmentations
This is very important code for image segmentation comparisons, this code calculates RI, GCE and VI for segmentation comparisons.
- 2013-09-22 20:11:33下载
- 积分：1
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liantongyuzongmianjiyushuliang_DGlearn
说明： 通过利用“Otsu”方法对图像进行全局阈值分割处理。然后，将灰度图转化成二值图，为获得大豆颗粒计数和大小做准备。调用函数获得图像连通图的数量，并测量标注矩阵中每个标注区域的属性，获得每个标注区域的长度。最后通过寻找每个区域的重心数，即可统计出大豆的个数(The Otsu method is used to segment the image. Then, the gray-scale image is transformed into a binary image to prepare for the soybean particle count and size. Call the function to get the number of connected graphs, measure the attributes of each annotation region in the annotation matrix, and get the length of each annotation region. Finally, the number of soybean can be calculated by finding the number of barycenters in each region)
- 2019-11-14 22:33:51下载
- 积分：1
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频谱感知经典算法
频谱感知是认知无线电的一个重要前提，而能量检测法则是比较成熟的频谱感知算法。它可以有效地凡发现频谱孔，使得认知无线电与周围通信环境相适应；利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报
- 2023-02-10 23:15:03下载
- 积分：1
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Matlab源代码
Matlab sources codes
- 2023-08-08 22:20:04下载
- 积分：1
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ofdm_channel
ofdm channel using and measure of PSNR
- 2014-02-06 00:22:03下载
- 积分：1
