Description: 随机信号不同取样长度时的功率谱估计，matlab实现，用于数字信号处理-random sampling signal different lengths of power spectral estimation, Matlab achieve for digital signal processing Platform: |
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Author:qjsky |
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Description: 用c语言实现下列的数字信号处理算法
1．离散傅里叶级数合成连续周期信号
2．DIF FFT 测试程序
3．将输入数据的幅度画出图形
4．使用FFT实现快速卷积
5．使用FFT实现快速相关
6．取样混迭演示程序
-language used to achieve the following digital signal processing algorithms 1. Discrete Fourier series synthetic signal two consecutive cycles. DIF FFT three test procedures. The input data rate of 4 paint graphics. Use FFT fast convolution 5. Use FFT fast correlation 6. Aliasing sampling Demonstration Program Platform: |
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Author:胡叶 |
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Description: （一）时域采样及其频谱
一．实验目的:1.熟悉Matable的实验环境,并学会 如何利用其进行对信号处理进行图形分析.
2.编程计算于模拟信号的连续频谱和离散采样信号的连续频谱,实现时域采样及其频谱分析,充分理解时域采样的特点及定理,并在实验过程中体会奈奎斯定理.
二．实验环境: MATABE软件平台
-(1) domain and a spectrum. Experimental purposes : 1. Matable familiar with the experimental environment, and learn how to use their right for signal processing graphics for analysis. 2. Programming from the calculation of continuous analog signal spectrum and from the San continuous sampling signal spectrum to achieve sampling and time-domain analysis of the spectrum, the time-domain fully understand the characteristics and sampling theorem. and the experimental process Experience Naikuishi theorem. 2. Experimental environment : MATABE software platform Platform: |
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Author:王并 |
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Description: 1．了解数字信号处理系统的一般构成；
2．掌握奈奎斯特抽样定理。
为方便实现，实验中更换了一种表现形式，即抽样频率固定（10KHz），通过改变输入模拟信号的频率来展示低通抽样定理。我们可以通过研究抽样频率和模拟信号最高频率分量的频率之间的关系，来验证低通抽样定理。-1. Understanding digital signal processing system of the general composition; 2. Master Nyquist Sampling Theorem. To facilitate the realization of the experiment to replace a form of expression, that is, fixed sampling frequency (10KHz). By changing the input signal frequency to demonstrate low-pass sampling theorem. We can, through research and sampling frequency of the highest frequency analog signal frequency components of the relationship between to verify low-pass sampling theorem. Platform: |
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Author:深蓝 |
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Description: 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. Platform: |
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Author:qinyang |
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Description: 连续信号的采样与重构，主要说明信号采样与重构程序-continuous signal sampling and Reconstruction, the main note signal sampling procedures and Reconstruction Platform: |
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Author:徐恒梅 |
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Description: MATLAB 下的数字信号处理实现示例
理想采样信号序列
-MATLAB under the digital signal processing to achieve the ideal example of the sampling signal sequence Platform: |
Size: 3072 |
Author:kassia |
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Description: MATLAB 下的数字信号处理实现示例
附录一 信号、系统和系统响应
1、理想采样信号序列
（1）首先产生信号 x(n),0<=n<=50 -MATLAB under the realization of digital signal processing examples in Appendix 1 signal, systems and systems to respond to one, the ideal sampling signal sequence (1) First of all, have a signal x (n), 0 Platform: |
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Author:doris |
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Description: WLAN仿真－发送机
wlan No Comments
设置完系统参数后，开始产生发送数据。
1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波，形成OFDM符号
4. 产生pilot，并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft，将频域信号变到时域，并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamble
9. 在时域产生long preamble
10. 将preamble和数据符号组成packet
11. 升采样
得到信道传输的数据Tx_signal_up
具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling received data transmission channel Tx_signal_up specific procedures see Annex wlan_transmitter.m Platform: |
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Author:福东方 |
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Description: 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
-1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Made of the three signals in root-mean-square maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform Platform: |
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Author:白杨 |
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Description: 适用MATLAB仿真实现对模拟信号的采样量化编码程序（模拟信号采样经均匀量化后自然二进制编码），通信系统仿真必备-The application of MATLAB simulation of analog signal sampling quantization coding procedures (analog signal sampling by the uniform quantization after the natural binary code), communication system simulation must Platform: |
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Author:侯婷 |
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Description: 滤波器的设计，信号的抽样，频率变换，信号的幅频，信号的相频等-Filter design, signal sampling, frequency conversion, the signal amplitude and frequency, phase frequency signals, such as Platform: |
Size: 140288 |
Author:xiguyezi |
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Description: 使用matlab对正弦信号采样 以及对其进行DFT变换-Matlab sinusoidal signal on the use of sampling, as well as its DFT transform Platform: |
Size: 38912 |
Author:史惠 |
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Description: 基于+MATLAB+的时域信号采样及频谱分析-+ MATLAB+ based on the time-domain signal sampling and spectral analysis Platform: |
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Author:yxy |
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Description: 运用Matlab语言编程，进行信号分析的能力。音频信号是一种连续变化的模拟信号，计算机只能处理和记录二进制的数字信号，由自然音源而得的音频信号必须经过采样，量化和编码，变成二进制数据后才能送到计算机进行再编辑和存贮，通过本实验中了解模拟信号采样和重构的完整过程，加深对采样定理的理解。-Matlab programming language to use for signal analysis. Audio signal is a continuous change of the analog signal, the computer can only handle and record the binary digital signal, derived from natural sources of the audio signal to be sampled, quantification and encoding binary data into a computer in order to re- editing and storage, through this experiment to understand the analog signal sampling and reconstruction of the full process, to deepen understanding of the sampling theorem. Platform: |
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Author:tong |
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Description: 应用MATLAB实现连续信号的采样与重构仿真-Application of MATLAB to achieve continuous signal sampling and reconstruction of simulation Platform: |
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Author:王鹏 |
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Description: 基于 MATLAB 的时域信号采样及频谱分析，是很好的学习时域信号的matlab源代码。-MATLAB-based time-domain signal sampling and spectral analysis, is a very good study of time-domain signal matlab source code. Platform: |
Size: 1024 |
Author:dean |
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Description: 初步学习采样和重建信号。包括源程序和报告书。-Preliminary study of sampling and reconstruction of the signal. Including the source and report. Platform: |
Size: 57344 |
Author:fashenqq |
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Description: 信号的采样与重建，对已知连续信号进行采样，然后通过离散信号恢复原始信号。-Signal sampling and reconstruction of continuous signals to known samples, and then restore the original signal through the discrete signal. Platform: |
Size: 1024 |
Author:lipinglin |
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Search - sampling signal matlab