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34
说明： 根据滤波器指标选择合适的窗函数，计算窗函数的长度N，调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序，调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。
(Select the appropriate indicators according to filter window function, calculate the length of window function N, called MATLAB function fir1 design a FIR low-pass filter. And programming, call MATLAB functions fftfilt achieve fast convolution filtering xt. Graphics filter frequency response curve, the filter output signal amplitude and frequency characteristics of maps and time-domain waveform. )
- 2011-05-24 09:17:20下载
- 积分：1
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FEI
假设在一个ad hoc网络中，移动节点的发射功率PTx总是恒定的。要发送数据的移动节点总是先监听信道，测量接收到的信号功率X，其中X= I + N, I为接收到的干扰，N是噪声。移动节点只有在X＜INThre时，才可以发射。式中，INThre为背景噪声门限。
在仿真中，我们规定每个移动节点的发射功率是常数，PTx = 1W；接收节点接收机的灵敏度Smin = -80 dBm；信号质量 min = 2 dB；系统的背景噪声门限INThre = 1.2e-10。
(Assuming in an ad hoc network, mobile node s transmission power is always constant PTX. To send data to the mobile node always monitor channel, measuring the received signal power X, which X = I+ N, I was received interference, N is the noise. Mobile node only when X <INThre when it is fired. Where, INThre threshold for background noise. In the simulation, we require that each mobile node s transmission power is constant, PTx = 1W receiver node receiver sensitivity Smin =-80 dBm signal quality )
- 2008-01-05 11:21:40下载
- 积分：1
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igig
the strategy of simulate and modelling wind energy
- 2014-11-06 21:15:06下载
- 积分：1
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jpeg-compression
compression algorithm-matlab code
- 2010-07-30 17:09:30下载
- 积分：1
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gmsk
说明： gsm通信中，成功应用了gmsk调制，该模块用simulink实现gmsk调制及其性能测试，(gsm communication, the successful application of the GMSK modulation, the module using simulink realization of GMSK modulation and its performance testing,)
- 2008-09-10 16:09:08下载
- 积分：1
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sound-graph2
WE NEED PART 2 CODE In MATLAB SOUND DECODEING
- 2013-10-07 19:04:29下载
- 积分：1
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RS-code-and-missile-data-link
在弹载数据链系统中,进行测试验证，实验表 明RS码能够明显改善弹载数据链的误码率性能。(In the onboard data link systems, test validation experiments show that RS code can significantly improve the bit error rate performance onboard data chain.)
- 2014-01-21 10:25:32下载
- 积分：1
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data_processing
故障时频域特征提取，前六阶CEEMDAN+初始信号时频域特征(Fault time-frequency domain feature extraction, first six-order CEEMDAN + initial signal time-frequency domain feature)
- 2020-06-24 07:20:02下载
- 积分：1
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youhua
最优化问题方法介绍,以及工具箱补充实验.m文件(Method of optimization problem introduction, as well as the toolbox to add the experiment. M file)
- 2007-08-21 16:28:39下载
- 积分：1
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ImageHistEqAndEdgeDetect
image histogram equilization and edge detection
- 2010-05-28 22:35:55下载
- 积分：1
