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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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通信编码
说明： lbc_example：未编码的BPSK调制的性能（理论计算与仿真）、重复码硬判决的性能
lbc_example_SD： 未编码的BPSK调制的性能（理论计算）、重复码硬判决的性能、重复码软判决的性能
lbc_example_SD_EbNo：lbc_example_SD中的性能，并且进一步考虑了码率不同时，对于信道的SNR值进行归一化，以Eb/No = SNR/(2*R)为横坐标时的比较结果
lbc_example_Hamming_EbNo：汉明码，硬判决译码的性能(Lbc_example: Performance of uncoded BPSK modulation (theoretical calculation and simulation), performance of duplicate code hard decision
Lbc_example_SD: Performance of uncoded BPSK modulation (theoretical calculation), performance of hard decision of duplicate code, performance of soft decision of duplicate code
The performance of lbc_example_SD_EbNo: lbc_example_SD is considered, and the SNR value of channel is normalized when the bit rate is different. The comparison results are obtained when Eb/No = SNR/(2*R) is the abscissa coordinate.
Lbc_example_Hamming_EbNo: Hamming Code, Performance of Hard Decision Decoding)
- 2019-04-24 14:02:35下载
- 积分：1
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C
说明： 计算全息图生成和再现，用于数字全息的研究(CGH generation and reconstruction for digital holography study)
- 2010-05-23 10:03:35下载
- 积分：1
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CoOFD_callOptiSystem
OPTICAL COMMUNICATIONS MATLAB calls OptiSystem CO-OFDM.
- 2020-10-16 21:47:28下载
- 积分：1
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ofdm_cp
对ofdm不同cp长度下系统性能的分析(Performance analysis of OFDM systems with different CP lengths)
- 2021-01-29 22:08:34下载
- 积分：1
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MobileNet-SSD-master
说明： 深度学习网络产生两个txt文件分别为测试数据特征提取结果与标签结果，提取两个文件内容并按行绘制平方损失函数图(The deep learning network generates two TXT files, which are the result of feature extraction and label extraction of test data, and extracts the contents of the two files and draws the square loss function graph according to the line.)
- 2019-04-24 14:57:18下载
- 积分：1
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自动控制原理10--动态系统的最优控制方法
说明： 自动控制原理，与《最优化方法及其Matlab程序设计》相对应，动态系统的最优控制方法(Optimal Control Method for Dynamic Systems)
- 2020-06-22 23:20:01下载
- 积分：1
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Matlabdigitalsignal
MATLAB+7_0+在数字信号处理中的应用,主要讲解信号处理工具箱以及各种信号处理仿真算法(MATLAB+7_0+ in digital signal processing applications, mainly on the Signal Processing Toolbox, and a variety of signal processing simulation algorithm)
- 2013-03-20 15:44:47下载
- 积分：1
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yuyinxinhaochuli
语音处理是信号与信息处理的重要内容之一，通过本课程设计，使学生理解数字信号处
理的有关理论和方法在语音处理中的具体应用。课程设计的目的归纳如下：
1、掌握语音信号的特点；
2、掌握语音处理的基本理论和方法；
3、掌握基于Matlab编程实现语音的获取、显示、频谱分析、短时能量、短时自相关以及倒
谱复倒谱的分析方法；
4、掌握语音基音频率及共振峰频率的检测方法。(Signal and speech processing is an important part of information processing, through the curriculum design, so that students understand the digital signal
The theory and methods of management in voice processing in the specific application. Curriculum is designed to be summarized as follows:
A master speech signal characteristics
2, master the basic theory and speech processing methods
3, master Matlab programming based voice access, display, spectrum analysis, short-time energy, short-term autocorrelation and inverted
Spectral analysis of the complex cepstrum method
4, master voice pitch frequency and formant frequency detection method.
)
- 2013-09-12 19:13:45下载
- 积分：1
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VolumeRender
说明： This function is a Volume Render application, using OpenGL surfaces.
- 2020-06-24 09:20:02下载
- 积分：1
