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ChannelEstimationInOFDMsystems
用 MATLAB 实现简单的信道估计
用 MATLAB 实现简单的信道估计
(channel estimated)
- 2010-11-10 20:14:26下载
- 积分:1
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DSP
任务:
1) 借助MATLAB画出误差性能曲面和误差性能曲面的等值曲线(参考PPT2.1第17页的两幅图);
2) 写出最陡下降法以及LMS算法的计算公式(取 );
3) 用MATLAB产生方差为0.05, 均值为0白噪音S(n),并画出某次采样得到的波形(即产生任意一个噪声随机序列);
4) 根据 2)中的公式,并利用 3)中产生的S(n),在 1)中的误差性能曲面的等值曲线上叠加画出采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线(参考PPT2.1第17页的右下图的曲线1和曲线2)。
5)用MATLAB计算并画出LMS法时 随时间n的变化曲线(对应S(n)的某一次的一次实现)和e(n)波形;
注意:某一次实现的结果并不能从统计的角度反映实验的结果 的正确性,为得到具有统计特性的实验结果,可用足够多次的 实验结果的平均值作为实验的结果。用MATLAB计算并画出 采用LMS法时,J(n)的100次实验结果的平均值随时间n的变 化曲线(即 生成随机噪声信号并计算结果,重复执行100次, 求平均结果)。
6)在 1)中的误差性能曲面的等值曲线上,叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线;
(Task:
1 ) Draw with MATLAB error performance surface and surface contour error performance curve ( refer PPT2.1 two chart on page 17 )
2 ) Write the steepest descent method and the LMS algorithm formula ( take )
3 ) Using MATLAB to generate variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform ( ie, any noise generated random sequence )
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour plot using the steepest descent method and the LMS method when H (n) the iterative process in the trajectory curve ( refer PPT2.1 page 17 bottom right of the curves 1 and 2 ) .
5 ) using MATLAB LMS method is used calculate and draw the curve with time n (corresponding to S (n) of a first implementation of a ) and e (n) waveform
Note : in a first implementation of the results are not reflected from a statistical point of view of accuracy of the experimental results ,)
- 2013-11-08 20:09:06下载
- 积分:1
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huiseyuce
灰色预测 数学建模 运筹学必备,包含资料,说明论文(Gray mathematical modeling to predict the necessary operations research, including information on paper)
- 2014-01-04 15:47:15下载
- 积分:1
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fdtd3D_UPML
fdtd3D_UPML simulation
- 2011-09-02 21:08:13下载
- 积分:1
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eof
eof分解 想要的拿走吧 自己随便写的 有问题的话可以email我(eof decomposition want take it easily write their own needs to take the trip)
- 2013-09-25 22:54:43下载
- 积分:1
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dudt_Fre_513
变频器(频率自定义)+Dudt的LC滤波器(LC自定义)+电缆模型(长度自定义)+高频异步电机模型(参数自定义)(The LC filter inverter frequency (custom)+Dudt (LC) custom+ cable model (custom length)+ high frequency induction motor model (custom parameters))
- 2015-05-16 17:20:03下载
- 积分:1
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Simulink
matlab下的离散系统仿真模型和相关事例,具有很好的参考价值(matlab under the discrete system simulation model and related stories are very good reference value)
- 2007-10-15 10:45:08下载
- 积分:1
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BPSK_BER
binary phase shift keying
- 2012-04-03 18:43:11下载
- 积分:1
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insertion_sort
Program to carry out insertion sort in C
- 2014-10-05 05:53:26下载
- 积分:1
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dm
说明: code of digital modulation with memory
- 2014-11-25 03:45:11下载
- 积分:1