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HFRSIM-dong20061210
高频地波雷达完整仿真matlab程序
网上找到的，很好很强大(HF ground wave radar matlab simulation program integrity found online, very good strong)
- 2021-01-21 20:08:45下载
- 积分：1
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qdr-paper
基于四叉树与图割的遥感图像分割方法，关于四叉树和图割的应用(Quadtree-based remote sensing image and graph cuts segmentation method, on the quad tree and the application of graph cuts)
- 2011-01-17 15:34:36下载
- 积分：1
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paper1
有限差分法解静电场的边值问题的算法实现.
非常好的FDTD论文和软件算法代码(Finite differance time domain method field solver introduction)
- 2012-04-02 13:51:39下载
- 积分：1
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pulseblanking
实现脉冲消隐以在通信系统去除较大干扰,保证误码率性能(Realization of pulse blanking to remove larger interference in communication system, guaranting the bit error rate performance)
- 2014-02-19 10:41:15下载
- 积分：1
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fangzhen
实验一 双极性矩形随机信号的归一化功率谱密度一
1.1 功率谱密度简介
平稳过程的任何一个非零样本函数的持续时间为无限长，显然都不满足绝对可积和总能量有限的条件。因此，它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。
随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t)，它的功率谱密度为：
式中， 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密度。过程的功率谱密度应该看作是任一实现的功率谱密度的统计平均，即
虽然该式给出了平稳随机过程的功率谱密度，但我们通常都不利用这个式子来计算功率谱。我们知道，确知的非周期功率信号的自相关函数与功率谱密度是一对傅里叶变换。对于平稳随机过程，也有类似的关系，即
和
对于平稳随机过程我们通常先求出其自相关函数再利用上式求出其功率谱密度。
1.2 实验要求
1.了解平稳随机信号功率谱的概念及计算方法
2.仿真不同占空比，等概、非等概双极性矩形随机信号的归一化功率谱密度
3.分析不同信号所包含的频谱分量，有无直流分量和定时分量信息
(A pair of rectangular random experiment polarity signal sample return a nonzero function of any duration power spectral density of a 1.1 power spectral density of a stationary process Introduction of infinite length, apparently not satisfied absolutely integrable and the total energy of the limited conditions. Therefore, it is the Fourier transform of the spectrum that does not function does not exist. Therefore, we use the power spectral density to express their spectral characteristics. Any random process is a realization of a certain type signal power. For arbitrarily determined power signal f (t), its power spectral density is: wherein, is f (t) is a function corresponding to the truncated spectrum function. f (t) is a stationary random process of realization. The random process to achieve a certain power spectral density can not serve as the power spectral density of the process. Power spectral density process should be seen as a statistical average power spectral density of any r)
- 2014-11-30 20:39:29下载
- 积分：1
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QPSK
qpsk的matlab程序，描述了qpsk的仿真和理论的误码率误比特率(qpsk matlab program, qpsk simulation and theoretical description of the error rate, bit error rate)
- 2013-04-15 19:39:15下载
- 积分：1
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kuaisufuliyebianhuan
介绍了快速Fourier变换算法(FFT)的核心思想及其算法描述,并用Matlab程序设计语言实现了FFT算法.最后,举例说明用FFT算法计算复函数f(x)的插值函数(Introduced the fast Fourier transform (FFT) algorithm and its core idea of the algorithm description and using Matlab programming language to implement the FFT algorithm. Finally, an example using the FFT algorithm to calculate complex function f (x) is the interpolation function)
- 2013-12-14 15:50:44下载
- 积分：1
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VLC_simulation
实现可见光通信的仿真，用OFDM的调制方式(VLC communication OFDM)
- 2018-12-30 15:55:12下载
- 积分：1
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mimo-transmission
模拟信号在多天线下传输的整个过程，包括调制、过信道、解调、计算误码率等(The analog signal in a multiple antenna transmission the entire process, including modulation, over a channel demodulation, calculate the error rate)
- 2013-10-29 10:50:42下载
- 积分：1
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esprit_tls
frequency estimation using TLS ESPRIT
- 2011-08-07 20:07:11下载
- 积分：1
