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WaveformDownloadAssistant-v2
gps signal generator code for matlab
- 2012-01-04 20:42:37下载
- 积分：1
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Turbomatlab
turbo码的matlab仿真,有程序/仿真图以及论文.(turbo codes Matlab simulation, process/simulation maps and papers.)
- 2021-04-08 23:19:00下载
- 积分：1
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DOA
DOA估计的算法，其中包括Music算法、空间平滑Music算法、Root-Music算法、ESPRIT算法MVDR（最小方差无失真）算法等，便于比较(DOA estimation algorithms, including algorithms Music, Music spatial smoothing algorithm, Root-Music algorithm, ESPRIT algorithm MVDR (minimum variance distortion) algorithm, to facilitate comparison)
- 2011-11-08 12:30:43下载
- 积分：1
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ofdm_ls_mmse_compare
说明： 仿真了ofdm的LS和MMSE的信道估计程序，并进行了比较，能调通运行(Ofdm simulation of the LS and MMSE channel estimation procedures, and compared to pass transfer operation)
- 2009-08-03 09:15:54下载
- 积分：1
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7
说明： 7. 单径瑞利信道中的两发一收STBC：
(1) 分析误码率的理论性能，画出比特信噪比与误码率的关系曲线。
(2) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。(7. Two outgoing and one outgoing STBC in single-path Rayleigh channel:
(1) analyze the theoretical performance of bit error rate and draw the curve of the relationship between bit SNR and bit error rate.
(2) please design a specific navigation-assisted channel estimation method, Simulink simulation, measurement of BPSK modulation error rate performance.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn.)
- 2019-01-15 11:00:37下载
- 积分：1
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scma-PM-MPA
说明： SCMA系统中的PM-MPA检测，信道采用瑞利信道，迭代次数为6(For PM-MPA detection in SCMA system, Rayleigh channel is adopted and the number of iterations is 6)
- 2021-03-26 17:20:44下载
- 积分：1
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2
说明： 2. 关于无线信道的多普勒谱，请回答以下问题：
(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。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions:
(1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing;
(2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape;
(3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)
- 2021-01-23 19:48:44下载
- 积分：1
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law of reflection
根据入射定律，求出地震波在地下存在单层倾斜界面时的射线走时和射线路径。(According to the incidence law, the ray travel time and ray path of seismic wave with single layer inclined interface are obtained.)
- 2018-10-08 21:27:05下载
- 积分：1
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LFM_rect
线性调频信号的时域 频域 模糊度函数的设计(The design of the chirp signal time domain frequency domain ambiguity function)
- 2012-10-24 11:44:18下载
- 积分：1
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寻找起伏度最佳窗口arcgis
均值变点是统计学中常用的变点分析方法，其主要思想如下：
假设有一组数据，随着某个指标变化（增大），其值逐渐增加并趋于稳定，如何判断在这个过程中是否出现了突变的情况，异样的情况？
均值变点分析方法提供了一种思路，大概如下：
1 计算总的均值和方差；
2 循环将这组有序数据分成两组，X1，X2
计算各组的均值和方差，
计算总方差与分组方差之和的差；
3 得到变点(The change point of mean is a commonly used change point analysis method in statistics. Its main ideas are as follows:
If there is a set of data, as a certain index changes (enlargement), its value increases gradually and tends to be stable. How to judge whether there is a sudden change in the process and the unusual situation?
The mean change point analysis method provides a way of thinking, which is as follows:
1 the total mean and variance are calculated.
The 2 cycle divides the ordered data into two groups, X1, X2.
Calculate the mean and variance of each group.
The difference between the sum of the total variance and the group variance is calculated.
3 get a change point)
- 2021-04-15 14:18:54下载
- 积分：1
