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MATLAB
matlab学习课件 很重要的,讲的比较精,很实用的(Matlab learning courseware is very important, pure, is very practical)
- 2010-06-22 10:53:12下载
- 积分:1
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whole-OFDM-matlab-code
最完整的OFDM matlab程序,适合OFDM入门者。(the whole OFDM matlab program code, which is suitable for the rudimental user.)
- 2010-01-14 13:19:03下载
- 积分:1
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Matlab_bioinfomatic_toolbox_tutorial1
maltab 生物信息学工具箱使用教程第一部分(Bioinformatics Toolbox maltab the first part of Tutorial)
- 2011-01-09 19:46:02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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sim_singleF_heartandbreath
生命迹象探测步进频仿真生命迹象微弱目标探测步进频仿真(Vital signs to detect faint signs of life stepping frequency simulation target detection step frequency simulation)
- 2020-11-19 10:19:37下载
- 积分:1
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Harris-MATLAB
Harris角点特征提取MATLAB代码,完整的中文注释了每条命令的用法意义。(Harris corner feature extraction MATLAB code, note the use of the full Chinese meaning of each command.)
- 2013-12-31 00:38:52下载
- 积分:1
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DesignForQpsk
课程设计用到的qpsk,包括qpsk信号的调制与解调,可运行,有图(Curriculum design qpsk used modulation and demodulation, can be run, there are plans。)
- 2009-06-06 10:12:56下载
- 积分:1
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rengongmianyi
Matlab人工免疫算法的利用,希望对大家有帮助(Matlab using artificial immune algorithm, we want to help)
- 2010-05-13 17:00:07下载
- 积分:1
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qeifang
GSM中GMSK调制信号的产生,一个师兄的毕设,包括最小二乘法、SVM、神经网络、1_k近邻法。( GSM is GMSK modulation signal generation, A complete set of brothers, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.)
- 2017-01-10 17:46:22下载
- 积分:1
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ARxzxfc
AR模型,用修正协方差法求谱估计,简单实用。(AR model, with amendments covariance spectral estimation method, simple and practical.)
- 2009-06-26 10:22:11下载
- 积分:1