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Comm_Codes
This code is to investigate codes generation using MATLAB ( Barker code,M-sequence,Walsh code)
and To investigate Correlation characteristics of spreading codes Aperiodic and periodic Autocorrelation.,Aperiodic and aperiodic crosscorrelation.To check some properties of spreading code
- 2012-05-14 10:42:19下载
- 积分：1
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jiyinzhouqi
利用自相关函数估计基音周期，函数jiyinzhouqi，输入参数是分析语音文件名和帧移，帧移在5~10ms(function jiyinzhouqi is used for estimate the period of fundamental tone.)
- 2011-09-15 16:56:49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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c5_2
基于实数编码遗传算法的pid整定 样本数为30性能指标j＝23.9936(Based on real-coded genetic algorithm tuning of pid number of samples for the 30 performance indicators j = 23.9936)
- 2007-08-15 19:49:01下载
- 积分：1
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Cmeans
使用MATLAB软件进行模糊C均值聚类，进行迭代并观察迭代过程。(Using MATLAB software fuzzy C-means clustering, iterative and observe the iterative process.)
- 2013-11-11 17:20:06下载
- 积分：1
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sfiffness_convert_from_force
how to convert force in active suspension to stiffness for active air_suspension system.
- 2012-11-07 18:04:33下载
- 积分：1
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Chap_5_Pred
《自适应滤波器》第五章Chap_5_Pred源代码，很详细(" Adaptive Filter" Chapter V Chap_5_Pred source code, very detailed)
- 2013-12-28 15:49:17下载
- 积分：1
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ImageProcessingToolbox
image processing tool box
- 2010-06-05 00:55:53下载
- 积分：1
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LP-filter
this file is the source code of low pass filter. It can perform as low pass filter
- 2011-02-09 10:05:05下载
- 积分：1
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predictive-control
DMC，MAC以及广义预测控制的一些程序(DMC, MAC and generalized predictive control of some of the procedures
)
- 2012-03-28 09:25:25下载
- 积分：1
