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zmccdma_gold
通过matlab建立码分多址通信系统的仿真平台，并仿真了扩频通信的性能(Matlab code division multiple access communication system through the establishment of the simulation platform, and simulated the performance of spread spectrum communication)
- 2010-03-10 15:51:22下载
- 积分：1
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KalmanFilterVolcity
Kalman Filter vitesse
- 2012-04-23 21:08:02下载
- 积分：1
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power-spectrum
功率分析 根据自己需要修该，已经过验证，可使用
(power sp)
- 2011-07-29 13:22:30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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xiepaoyundong
something about physics
- 2009-05-11 09:43:59下载
- 积分：1
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RF-Lab-manual---Cop
multidevice antenna for portable device
- 2013-10-21 01:21:45下载
- 积分：1
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Timofte-ICCV-2013
Anchored Neighborhood Regression for Fast Example-Based Super-Resolution
- 2013-12-19 14:28:16下载
- 积分：1
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chap5
雷达系统5---------------利用参数进行滤波,并绘制相关图形(Radar system--------------- use parameters to filter and draw relevant graphics)
- 2012-03-21 23:11:59下载
- 积分：1
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DE-CMC
印刷行业用来计算cmc色差公式的matlab的编程(Cmc color printing industry formulas used to calculate the matlab programming)
- 2015-03-12 16:04:32下载
- 积分：1
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exercise1
考虑章动、极移、岁差下历元时刻月球在瞬时平天球坐标系，J2000协议地固系，WGS-84坐标系下的位置速度矢量及转换的matlab源程序(Consider nutation, polar motion, precession next epoch in the instantaneous level of the moon celestial coordinate system, J2000 protocol to the solid line, the position and the velocity vector conversion WGS-84 coordinate system matlab source)
- 2013-12-25 22:40:36下载
- 积分：1
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