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demobpsk
demo bpsk used for modulation
- 2009-11-02 12:41:26下载
- 积分:1
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License-plate-recognition
“License-plate-recognition-01-modified-1.zip”使用Matlab,实现自动车牌分割、矫正、识别。(the code can abtain auto-segmentation,and auto-recognition of license plate.)
- 2012-03-27 21:49:56下载
- 积分:1
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wigb
用于应用二维数组,生成地震记录剖面,对于地震模型的模拟数据快速生成剖面很有帮助。(A two-dimensional array for application and generates seismic records for seismic model section of analog data generated fast profile is very helpful.
)
- 2011-05-30 13:31:56下载
- 积分:1
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03607_28
DFT进行频谱分析时的三种现象
1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。
改用其他窗函数(非矩形)改善泄漏。
3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分:1
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Cap04_Introduction-to-Multipath
This file is the programs of (chapter 4) of book (Modeling the Wireless Propagation Channel a Simulation Approach with MATLAB) which is related to introduction to multipath. It helps you to simulate multipath wireless channel.
- 2013-10-15 23:07:00下载
- 积分:1
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新建 Microsoft Word 文档
运用蚁群算法求函数最值,采取蚁群迭代。根据函数求出最大值(Ant colony algorithm is used to find the function minimum)
- 2017-06-06 16:12:08下载
- 积分:1
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Gui
matlab编制的牛顿拉夫逊法潮流分析,以及PQ、快速PQ法。采用IEEE30 节点算例(matlab prepared Newton Raphson load flow analysis, and the PQ, fast PQ method. IEEE30 bus test cases)
- 2012-05-08 23:24:35下载
- 积分:1
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New_folder__5_
Cannot create induction motor dq model.rar
- 2014-10-29 04:04:21下载
- 积分:1
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proakis_contemporary_communication_systems_using_
Matlab codes for Contemprary Communication systems using matlab
- 2010-06-21 16:35:39下载
- 积分:1
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75448158Rayleighsimulation
介绍了简单的ldpc编码,对初学者很有用!(Introduced a simple ldpc code is useful for beginners!)
- 2010-12-27 10:11:28下载
- 积分:1