-
ID009
I am uploading a file of Frequency Hopping Spread Spectrum:An Effective Way to Improve Wireless
Communication Performance.
Plz accept it.
Thanks and Regards,
salman
- 2013-03-22 12:50:13下载
- 积分:1
-
DWRR
采用动态加权综合评价方法建立评价模型,增大了评价结果的客观性。首先对评价指标数据进行归一化处理,然后选取偏大型正态分布函数作为动态加权函数建立评价模型,从而对评价指标观测值进行排序,最后用决策(Dynamic weighted comprehensive uation method to establish uation model, increasing the objectivity of uation results. First uation data normalization, and then the partial large normal distribution function as a dynamic weighting function uation model, and thus the uation observations are sorted, with the final decisions)
- 2015-04-21 16:59:09下载
- 积分:1
-
Measurement_matlabsim
本书讨论了时间域、频率域、数字域、调制域电子测量的主要方法,介绍了应用MATLAB仿真的方法实现电子测量中的信号源(含VCO和PLL)、示波器、频谱仪、瀑布图仪、相位仪、眼图仪、逻辑分析仪、时域反射仪、取样示波器、矢量示波器、矢量网络分析仪等测量仪器,并简要介绍了各仪器的工作原理、参数设置要点和注意事项。书中还给出了大量的仿真实例,对一些典型例子进行了分析和讨论。(This book discussion has time domain, and frequency domain, and digital domain, and modulation domain electronic measurement of main method, introduced has application MATLAB simulation of method achieved electronic measurement in the of signal source (containing VCO and PLL), and oscilloscope, and spectrum instrument, and falls figure instrument, and phase instrument, and eye figure instrument, and logic analysis instrument, and Shi domain reflection instrument, and sampling oscilloscope, and vector oscilloscope, and vector Network Analyzer, measurement instrument, and briefly introduced has the instrument of work principle, and parameter set points and note matters. A lot of simulation results are also given in the book, conducted an )
- 2014-06-05 07:57:37下载
- 积分:1
-
chap1
基于遗传算法的PID参数优化的MATLAB程序,采用的是二进制编码方式,通过传递函数的离散经过适应度计算 选择复制 交叉 变异操作得到最优解。(PID parameters based on genetic algorithm optimization of the MATLAB program, using the binary encoding, by the discrete transfer function adapted calculation select Copy crossover, mutation operations to obtain the optimal solution.)
- 2010-05-10 16:03:06下载
- 积分:1
-
possion
用matlab 实现求二维泊松方程解的过程(Seeking to achieve with two-dimensional Poisson equation matlab solution process)
- 2011-05-16 15:09:38下载
- 积分:1
-
Rician_model_fz_1
有关移动通信中莱斯(Rician)信道衰减的仿真,对信道的理解有一定的帮助(About mobile communications (Rician) Rice fading channel simulation, the channel has some help understanding)
- 2014-10-19 22:18:50下载
- 积分:1
-
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
-
wave
基于MATLAB/SIMULINK模块,搭建了基于下垂控制策略的海洋波浪发电系统的仿真模型(Based on MATLAB/SIMULINK module, built a simulation model based control strategy drooping ocean wave power generation system)
- 2013-12-28 10:43:27下载
- 积分:1
-
toolsgenetic
说明: 遗传算法工具箱,很实用的!请大家下载。一定感到很好!!!!(GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
)
- 2011-02-18 22:20:08下载
- 积分:1
-
givenhousehold
说明: 利用该程序可计算任意对称矩阵M,给出区间(a,b)上的特征值个数(Calculated using this program any symmetric matrix M, gives the interval (a, b) on the eigenvalues)
- 2011-03-18 20:48:55下载
- 积分:1