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improvethecoordinationofperception
由于实际信道中的多径和阴影效应，单个认知用户频谱感知的性能受到影响，因此需要靠不同用户间的协同频谱感知来对抗多径和阴影效应。本设计要求在文中采用一种协作机制，即两用户进行协作频谱感知，提高主用户的检测率，减少检测时间，并且得到捷变增益。要求给出仿真结果。(As the actual channel of the multi-path and shadow effect, a single user of spectrum sensing of cognitive performance are affected, it needs to depend on collaboration between different users of spectrum sensing to combat multipath and shadow effects. The design requirements in the text using a cooperation mechanism, namely, two user collaborative spectrum sensing, to improve the detection rate of the primary users, reducing detection time, and get agility gain. Required to give simulation results.)
- 2010-05-08 09:10:41下载
- 积分：1
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B
说明： 2013数学建模研究生B题建立多项式模型代码(2013 graduate of mathematical modeling to establish polynomial model code B title)
- 2013-09-21 08:50:53下载
- 积分：1
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matlab2
利用matlab进行五点滑动平均法平滑处理(Using matlab five-point moving average smoothing method)
- 2013-09-15 10:42:21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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linearmusic
说明： 经典MUSIC在均匀线阵的情况。本例给出了MUSIC算法估计出的算法图，从图中可以直接看到估计的角度。我们的仿真实验用的是8个阵列，2个接受信号。MUSIC算法的精度很高。(MUSIC classic in the case of uniform linear array. In this case gives the MUSIC algorithm to estimate the algorithm maps directly from the chart to see the estimated angle. Our simulation experiments using 8 arrays, two acceptable signals. MUSIC algorithm for high precision.)
- 2008-10-24 16:28:43下载
- 积分：1
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reof
说明： 这实际是一个通用的旋转正交经验函数。采用Kaiser标准化(Rotate EOF's
This is actually a generic varimax routine and knows nothing special about EOFs. It expects a matrix of "loadings")
- 2021-04-19 21:48:51下载
- 积分：1
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wireless
无线通信FPGA设计Matlab Verilog代码(Wireless FPGA design Matlab Verilog code)
- 2011-11-30 21:48:18下载
- 积分：1
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tftb2002toolbox
现代信号处理的matlab开发软件包，包含很多常用的库函数(Matlab development of modern signal processing software package that contains a number of commonly used library functions)
- 2015-03-16 18:44:30下载
- 积分：1
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mohr
摩尔应力圆 根据给定的正应力和切应力画出摩尔应力圆 程序在一个数值的计算上可能有BUG 但一般计算时没有问题(Mohr stress circle to draw molar stress circle program according to a given normal stress and shear stress in the calculation of a value may have BUG, but there is no problem in the general calculation)
- 2013-05-17 05:50:25下载
- 积分：1
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qangning_v77
MIMO OFDM matlab仿真,图像的光流法计算的matlab程序,部分实现了追踪测速迭代松弛算法。( MIMO OFDM matlab simulation, Image optical flow calculation matlab program, Partially achieved tracking speed iterative relaxation algorithm.)
- 2016-05-04 18:46:25下载
- 积分：1
