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2008_2
(1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因；
(2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理；
(3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。
((1) in certain wireless channel, the Doppler frequency shift will be caused by wireless channel output signal aliasing. Please describe the resulting aliasing of a variety of reasons (2) wireless channel Doppler spectrum there is a classical spectrum (classic spectrum), please explain such a spectral shape of the mechanism (3) Please use Simulink tools for writing code ( S-Function mode), resulting in a single Path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And please answer: prove that they used computer-generated classical spectrum is correct possible ways.)
- 2020-12-30 11:39:00下载
- 积分：1
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CS
说明： 此程序为，布谷鸟搜索算法优化小波神经网络，适合初学者，看一下就明白。(This program is, cuckoo search algorithm optimization neural network, suitable for beginners, look at it to understand.)
- 2015-11-27 19:02:14下载
- 积分：1
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程序
说明： 在已知二回路蒸汽发生量的情况下计算传热管的换热面积(Calculation of the heat exchange area of the heat transfer tube under the condition that the amount of steam generated in the secondary circuit is known)
- 2020-02-24 23:32:09下载
- 积分：1
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FrequencyImage
说明： 包括如何将几百个*.txt的文件读入程序，并通过快速傅立叶变换进行数据处理画出图像。(including how to hundreds*. txt file into the process, and through the fast Fourier transform data processing paint images.)
- 2006-03-15 08:25:22下载
- 积分：1
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PCM
Pusle code modulation
- 2014-09-03 23:46:29下载
- 积分：1
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FD_one_Medm
均匀完全弹性介质中声波传播的正演模拟,采用标准交错网格算法，SPML作为吸收边界(the propagation simulation of acoustic wave in uniform and purely elastic medium. we use SPML as the boundary conditions.)
- 2012-11-05 22:13:08下载
- 积分：1
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Wireless-fading-channel
连续导频正弦波通过存在Doppler频移的快衰落信道复模型（基带等效模型）的构造(Continuous pilot frequency sine wave by the presence of Doppler shift fast fading channel model (complex baseband equivalent model) structure)
- 2016-02-09 06:34:38下载
- 积分：1
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lin2
微网中逆变器准比例谐振控制模型，实现逆变器准pr控制，仿真效果很好。(Quasi-proportional Resonance Control Model of Inverter in Microgrid)
- 2021-03-05 15:59:31下载
- 积分：1
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方波信号的的快速傅里叶变换。
它是用图 result.a 非常快速的方式确定的一个信号，以 matlab 代码名称 (fft) 的傅里叶变换，然后把它画出来的方波信号的快速傅里叶变换的 matlab 程序代码
- 2022-03-18 09:42:28下载
- 积分：1
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work1
这是关于sharping处理的源程序，希望大家多多指教(This is dealt with on sharping source, I hope everyone exhibitions)
- 2008-01-04 16:44:28下载
- 积分：1
