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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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c17_erlangb
对于蜂窝移动通信模型的仿真，有很强的可移植性(Cellular mobile communication model for the simulation, there is a strong portability)
- 2009-12-07 10:28:48下载
- 积分：1
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SimpleSENSEreconstruction
简单SENSE图像重建，即使通过反傅里叶变换重建出最终图像(The data was acquired from 4-channel array coil using EPI sequence (2-shot, matrix: 64X64, TE: 50 ms) at a 1.5T scanner. The code estimates the coil sensitivity profiles directly from the image with anatomical contrast by low-pass smoothing. Subsequently, k-space data were decimated to simulate 2.0-fold acceleration (R=2.0). Finally, using least-squares estimate, the reconstructed full-FOV spin density image is obtained)
- 2009-06-06 18:29:42下载
- 积分：1
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fangshe
说明： 图像置乱中的仿射变换，优点是加密和解密的不需要周期迭代，图像置乱效果好(it is good for image scrambling becaus of low compute complexity)
- 2011-03-16 17:46:15下载
- 积分：1
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three_lever_inverter
本例程是三电平故障诊断仿真，通过观察输出波形来判断哪个开关管有损坏，是什么损坏(This Simulation files is a three-level fault diagnosis simulation, by observing the output waveform to determine which switch is damaged, what damage is)
- 2021-01-06 15:28:54下载
- 积分：1
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matlab
自己整理的一些关于matlab中的优化函数利用。其中主要包含了函数，以及函数的输入输出，及相关应用的表格(the using of Some optimization function in matlab )
- 2013-03-15 12:01:08下载
- 积分：1
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piezo-electric-transient
ansys有限元分析软件的压电喷射模态分析适用于ansys (ansys piezoelectric transient)
- 2015-01-25 20:09:07下载
- 积分：1
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sa_Ex7_5
DOA估计源码，Bartlett估计算法，估计性能极佳(DOA estimation matlab code)
- 2013-12-24 15:15:33下载
- 积分：1
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GBTF_Matlab_Code
一种用于Demosaic的方法，GBTF的matlab实现(Matlab code of a method of demosaicing, Namely GBTF)
- 2021-04-06 17:29:02下载
- 积分：1
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P3_gen_1020
根据公式产生多相码的相位，对应着转化为复数序列，然后相关脉压(generate P3 code)
- 2010-10-22 15:55:36下载
- 积分：1
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