-
simulation
在一个移动通信系统中，发射信号是一个未调制的音频x(t)=cos(2πft)，其中f=f0+fi。设标称载波为f0=1GHz，并设fi =512Hz。假定移动用户在一个繁忙的高速公路上距离基站l公里处的地方，从开始从每小时60公里的速度开始，其速度（在0.01秒的时间间隔内测量）以1/2的概率随机的增加或减少1/10公里每小时。试仿真移动用户在这2s的时间间隔内所接收到的信号(及其频谱)。接收信号可以表示为：
y(t)=a(t)Cos[2π(fo+f1)(t-△t)]
式中 △(t)=d(t)/c
且 a(t)=k/d2(t)
在上面的表达式中d(t)是在t时刻基站与移动用户的距离，c是光速，△(t)是传播延迟，而a(t)是信号在t时刻的衰减，并假设在这2s内a(t)是一个常数。利用复低通等效模型来进行仿真。(In a mobile communication system, the transmitted signal is an unmodulated audio x (t) = cos (2πft), where f = f0+ fi. Let nominal carrier of f0 = 1GHz, and set fi = 512Hz. Assume that mobile users on a busy motorway station l kilometers place, starting the beginning of 60 kilometers per hour, the speed (measured in 0.01 second interval) to increase the probability of a random 1/2 or reducing 1/10 km/h. Simulation test signal which the mobile subscriber in the 2s time intervals of the received (and its spectrum). The received signal can be expressed as:
y (t) = a (t) Cos [2π (fo+ f1) (t- △ t)]
Where △ (t) = d (t)/c
And a (t) = k/d2 (t)
In the above expression, d (t) at time t is a base station and a mobile user s distance, c is the speed of light, △ (t) is the propagation delay, and a (t) is the attenuation of the signal at time t, and assuming that 2s within a (t) is a constant. Using complex low-pass equivalent model for emulation.)
- 2015-11-24 17:16:20下载
- 积分：1
-
NS_control
Code matlab for FIFO control
- 2010-06-11 23:46:40下载
- 积分：1
-
PCA
主成分分析程序，简单易懂，修改路径可直接运行，附带详细说明(The PCA program with detailed explanations is very useful and effective，easy to understand. It can be run after modifying the input path.)
- 2015-01-21 16:33:20下载
- 积分：1
-
Matlab-senior-notes(4)
Matlab高级讲义-控制系统的分析方法(Matlab senior notes- control system analysis)
- 2011-12-24 21:13:56下载
- 积分：1
-
chap11
一个很经典的matlab例子，适合刚入门的人学习(dddddddddddddd)
- 2010-06-03 21:13:35下载
- 积分：1
-
AIS
这是一个人工免疫算法的matlab工具箱。该工具箱可以根据不同的优化函数形式设置来用人工免疫算法来寻优(This is an artificial immune algorithm matlab toolbox. The toolkit is based on different settings to optimize the function of the form of artificial immune algorithm with excellent来寻)
- 2009-03-29 13:29:51下载
- 积分：1
-
dpsk
说明： 此为MATLAB写的关于2DPSK调制解调的程序并且通过验证可以实现，程序对2DPSK的算法都有相应的程序(This is written in MATLAB on 2DPSK modem to verify the procedure can be achieved through the procedures of the algorithm 2DPSK procedures have corresponding)
- 2009-08-22 13:21:19下载
- 积分：1
-
ANN_RBF_LMS
fuel supply systeme control grid
- 2013-04-28 16:14:52下载
- 积分：1
-
CEEMDAN_V00
说明： ceemd可以将信号分解成若干个IMF分量(Ceemd can decompose the signal into several IMF components)
- 2020-12-07 10:09:21下载
- 积分：1
-
Matlab2ndnihe
matlab的二次拟合程序源码与大家分享！直接是M文件！(matlab secondary source fitting procedures to share with you! M file directly!)
- 2008-12-22 12:50:51下载
- 积分：1
