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Chapter9
现代通信信号在matlab中的实现以应用程序(good)
- 2009-05-09 17:29:06下载
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spectrogram_example
说明: stft的实验小程序,可以做个基础,然后据此展开做些复杂的东西(stft experiments applet)
- 2010-03-21 23:42:07下载
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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
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sar_echo
合成孔径雷达回波信号的建模,条理清晰,思路明确,赶紧下载吧。(Synthetic aperture radar echo signal is modeling, their clarity, ideas clearly, to download it.
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- 2012-03-30 19:30:48下载
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2007_Source-localization
IEEE TRANSACTIONS ON SIGNAL PROCESSING定位与跟踪经典文献“Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution”的Matlab程序。进行信号源被动定位与跟踪研究的童鞋可下载进行学习研究。(IEEE TRANSACTIONS ON SIGNAL PROCESSING positioning and tracking classic literature " Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution" in Matlab.)
- 2011-11-28 10:14:31下载
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HandUpwind
Function H for Method upwind, Lax_Friedrichs and Lax_Wendroff for equation of advection 1d in Matlab
- 2013-10-26 20:16:20下载
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ins_simulation
这是我用simulink编制的惯性导航解算的程序,可以模拟各种性能的惯导解算。(This is my prepared using simulink solver inertial navigation procedures, can simulate various properties of INS solver.)
- 2008-04-19 13:24:59下载
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jihekalmangujiK
系统参数变化,用集合卡尔曼滤波器估计其变化(System parameters used to estimate the changes in the ensemble Kalman filter)
- 2013-12-25 00:12:24下载
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Simulated-annealing-algorithm
模拟退火算法(Simulated Annealing,简称SA算法)是模拟加热熔化的金属的退火过程,来寻找全局最优解的有效方法之一。(Simulated Annealing algorithm (Simulated Annealing algorithm, hereinafter referred to as SA) is simulation heating the molten metal the Annealing process, to search for the optimal solution of one of the effective method.
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- 2012-02-11 14:40:48下载
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Erlang-B
Implement an Erlang-B program, and calculate the offered traffic load for
Channel number: 1~20, 200~220
Blocking rate: 1 , 3 , 5 , 10
- 2010-06-23 18:36:03下载
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