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MAT
详细介绍了在MATLAB环境中,MAT文件的编辑与读写,通常使用load和save两个命令进行 MAT 文件的读和写(Described in detail in the MATLAB environment, MAT files editing and read and write, load and save commonly used two commands to read and write MAT files)
- 2009-04-16 19:36:36下载
- 积分:1
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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
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Curve-volatility-observed-function
基于matlab的图像观察程序,有运用实例,可以放大波形进行波动性分析。(Matlab-based image viewing program, there is the use of examples, can magnify the volatility of waveform analysis.)
- 2014-09-01 23:29:49下载
- 积分:1
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PBRScript_res_circle
圆孔序列大小为15umX30nm,形成半周期的光栅,(Array of circular holes, about 15umX30nm, flanked
by gratings, with half the periodicity of the hole array)
- 2010-10-24 16:40:11下载
- 积分:1
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MATLAB_Line_setting
主要介绍了matlab软件中的画图语句,便于大家参考学习(Matlab software drawing statements for easy reference learning)
- 2013-03-16 12:30:32下载
- 积分:1
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DTMF
基于matlab的DTMF数字拨号音合成,通过的简单的时域连接,用于进一步分析合成效果。DTMF2是分析部分,用于显示时域波形,频谱图和语谱图。(Based on the synthesis matlab DTMF digit dialing tone, and connected by a simple time domain, for further analysis synthesis results. DTMF2 the analysis section, time-domain waveform, spectrum and spectrogram displays the)
- 2014-03-02 21:20:03下载
- 积分:1
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1
说明: 登录界面显示,matlab gui 编程的,可视化好(Login screen is displayed)
- 2017-03-12 16:33:51下载
- 积分:1
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matlab
《Matlab时频分析技术及其应用》随书源代码( Matlab time-frequency analysis technology and its applications, With the book source code)
- 2007-12-07 16:27:33下载
- 积分:1
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tridiagonal
solve a system of linear equations
- 2012-04-26 15:19:36下载
- 积分:1
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zigzag
zigag算法,将1-N^2的数字按照“Z”路径排序。附有程序运行截图。(zigzag algorithm)
- 2015-04-20 19:08:10下载
- 积分:1