Description: 有关载波调制的数字传输的MATLAB程序---载波幅度、相位、频率调制。-Related to modulation of the digital transmission of the MATLAB program--- carrier amplitude, phase, frequency modulation. Platform: |
Size: 6144 |
Author:杨毅 |
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Description: 数字信号调制中的幅度调制、频率调制、相位调制等例程。-Digital signal modulation of the amplitude modulation, frequency modulation, phase modulation, such as routines. Platform: |
Size: 8192 |
Author:Wang Geng |
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Description: .FSK、PSK、ASK调制原理 在数字通信系统中，数字基带信号通常要经过数字调制后再传输。常见的调制方式有频移键控（FSK）、相移键控（PSK）、幅移键控（ASK）-. FSK, PSK, ASK modulation principle in digital communication systems, digital baseband signal is usually subject to digital modulation and then transmitted. Common modulation methods are frequency-shift keying (FSK), phase shift keying (PSK), amplitude shift keying (ASK) Platform: |
Size: 157696 |
Author:xu |
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Description: An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. -An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. Platform: |
Size: 11264 |
Author:Griffin Wright |
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Description: digital modulation of the bit sequence, frequency modulation, amplitude modulation, phase shift keying, frequency shift keying Platform: |
Size: 1024 |
Author:sherry |
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Description: 通信信号的调制信息包含在信号的瞬时幅度、相位、频率的变化之中，不同的信号其频谱也呈现不同的特征，通过提取瞬时幅度、相位、频率以及频谱的参数统计特征，可以识别不同的通信信号。通常是利用对瞬时幅度、瞬时相位，瞬时频率和信号功率谱进行某种变换而得到可以明显区分各种信号的特征参数。-Communication signal modulation information is contained in the signal instantaneous amplitude, phase, frequency changes, the spectrum of different signals also show different characteristics, by extracting the instantaneous amplitude, phase, frequency and statistical characteristics of the parameters of the spectrum, you can identify different communication signals. Usually by the use of instantaneous amplitude, instantaneous phase, instantaneous frequency and signal power spectrum a transformation which can be clearly distinguished by the characteristic parameters of various signals. Platform: |
Size: 4096 |
Author:JIA |
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Description: 随着信息容量的增加和频率资源的稀缺，为提高单位频带利用率，在微波通信系统中越来越多地采用多电平多相位的复杂信号调制方式，尤其是正交幅度调制(QAM)得到了大量的应用，从早期的4QAM到今天的16QAM。高阶QAM调制大容量数字微波通信系统为了保证服务质量，降低误码率，-long with the increase of information capacity and frequency resource scarcity, for improving the utilization ratio, unit of microwave communication bandwidth used more and more in the system of multilevel much phase modulation method complex signal amplitude modulation Platform: |
Size: 629760 |
Author:蒋梦琪 |
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Description: To study the digital modulation techniques such as on-off keying (OOK), amplitude shift keying (ASK),frequency shift keying (FSK), binary phase shift keying (BPSK) and phase shift keying (PSK) pass band modulation and demodulation using MATLAB Simulink.it is very helpful techniques for matlab simulation and some works have already done and given. Platform: |
Size: 64512 |
Author:Saifur Rahman Sabuj |
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Description: Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying-Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying
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Size: 3072 |
Author:punitha sp |
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Description: 使用matlab实现智能预测控制算法，GLyZjln参数对于初学者具有参考意义，可以得到很精确的幅值、频率、相位估计，调试通过可以使用，pvMXwJH条件包括调制，解调，信噪比计算，基于互功率谱的时延估计。- Use matlab intelligent predictive control algorithm, GLyZjln parameter For beginners with a reference value, You can get a very accurate amplitude, frequency, phase estimation, Debugging can be used, pvMXwJH condition Includes the modulation, demodulation, signal to noise ratio calculation, Based on the time delay estimation of power spectrum. Platform: |
Size: 4096 |
Author:fpsawq |
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Description: 三相光伏逆变并网的仿真，模拟数据分析处理的过程，有信道编码，调制，信道估计等，可以得到很精确的幅值、频率、相位估计，基于互功率谱的时延估计，线性调频脉冲压缩的Matlab程序。- Three-phase photovoltaic inverter and network simulation, Analog data analysis processing, Channel coding, modulation, channel estimation, You can get a very accurate amplitude, frequency, phase estimation, Based on the time delay estimation of power spectrum, LFM pulse compression of the Matlab program. Platform: |
Size: 7168 |
Author:dfspti |
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Description: 可以得到很精确的幅值、频率、相位估计，采用累计贡献率的方法，有小波分析的盲信号处理，抑制载波型差分相位调制，预报误差法参数辨识-松弛的思想，用MATLAB实现的压缩传感。- You can get a very accurate amplitude, frequency, phase estimation, The method of cumulative contribution rate There Wavelet Analysis Blind Signal Processing, Suppressed carrier type differential phase modulation, Prediction Error Method for Parameter Identification- the idea of relaxation, Using MATLAB compressed sensing. Platform: |
Size: 11264 |
Author:nhtvebg |
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Description: 通过反复训练模板能有较高的识别率，多元数据分析的主分量分析投影，鲁棒性好，性能优越，有信道编码，调制，信道估计等，用MATLAB实现动态聚类或迭代自组织数据分析，现代信号处理中谱估计在matlab中的使用，可以得到很精确的幅值、频率、相位估计。- Through repeated training TUOtMJolate have higher recognition rate, Principal component analysis of multivariate data analysis projection, Robustness, superior performance, Channel coding, modulation, channel estimation, Using MATLAB dynamic clustering or iterative self-organizing data analysis, Modern signal processing used in the spectral estimation in matlab, You can get a very accurate amplitude, frequency, phase estimation. Platform: |
Size: 8192 |
Author:nkuee |
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Description: 包括广义互相关函数GCC时延估计，在MATLAB中求图像纹理特征，可以得到很精确的幅值、频率、相位估计，连续相位调制信号(CPM)产生，复化三点Gauss-lengend公式求pi，应用小区域方差对比，程序简单。- Including the generalized cross-correlation function GCC time delay estimation, In the MATLAB image texture feature, You can get a very accurate amplitude, frequency, phase estimation, Continuous phase modulation signal (CPM) to produce, Complex of three-point Gauss-lengend the Formula pi, Application of small area variance comparison, simple procedures. Platform: |
Size: 10240 |
Author:uiagxqbzd |
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Description: 针对EMD方法的不足,重要参数的提取，对于初学matlab的同学会有帮助，GSM中GMSK调制信号的产生，可以得到很精确的幅值、频率、相位估计，对信号进行频谱分析及滤波。- For lack of EMD, Extract important parameters, Matlab for beginner students will help, GSM is GMSK modulation signal generation, You can get a very accurate amplitude, frequency, phase estimation, The signal spectral analysis and filtering. Platform: |
Size: 13312 |
Author:sqrxq |
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Description: 数值分析的EULER法，在matlab环境中自动识别连通区域的大小,使用高阶累积量对MPSK信号进行调制识别，使用大量的有限元法求解偏微分方程，可以得到很精确的幅值、频率、相位估计，模拟数据分析处理的过程。- EULER numerical analysis method, Automatic identification in the matlab environment the size of the connected area, Using high-order cumulants of MPSK signal modulation recognition, Using a large number of finite element method to solve partial differential equations, You can get a very accurate amplitude, frequency, phase estimation, Analog data analysis processing. Platform: |
Size: 8192 |
Author:tqrharmq |
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Description: 包括调制，解调，信噪比计算，可以得到很精确的幅值、频率、相位估计，图像的光流法计算的matlab程序。- Includes the modulation, demodulation, signal to noise ratio calculation, You can get a very accurate amplitude, frequency, phase estimation, Image optical flow calculation matlab program. Platform: |
Size: 5120 |
Author:鱼海学 |
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Description: 可以得到很精确的幅值、频率、相位估计，使用matlab实现智能预测控制算法，GSM中GMSK调制信号的产生。- You can get a very accurate amplitude, frequency, phase estimation, Use matlab intelligent predictive control algorithm, GSM is GMSK modulation signal generation. Platform: |
Size: 4096 |
Author:qenjao |
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Description: ofdm system simulation including 16qam modulation fft windowing modules plus cp, You can get a very accurate amplitude, frequency, phase estimation, Simulation of doubly fed induction generator system. Platform: |
Size: 3072 |
Author:giuguiyouyun
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Description: Time Frequency Toolbox matlab时频分析工具箱,里面有各种时频分析函数，用matlab实现的，小波变换，Gabor变化，短时傅里叶变换等等(AF Ambiguity function
AR Auto-regressive (filter or model)
ASK Amplitude shift keyed signal
BJD Born-Jordan distribution
BPSK Binary phase shift keyed signal
BUD Butterworth distribution
CWD Choi-Williams distribution
FM Frequency modulation
FSK Frequency shift keyed signal
GRD Generalized rectangular distribution
HT Hough transform
MHD Margenau-Hill distribution
MHSD Margenau-Hill-Spectrogram distribution
MMCE Minimum mean cross-entropy
NAF Narrow-band ambiguity function
PMHD Pseudo Margenau-Hill distribution
PWVD Pseudo Wigner-Ville distribution
QPSK Quaternary phase shift keyed signal
RID Reduced interference distribution
STFT Short-time Fourier transform
TFR Time-frequency representation
WAF Wide-band ambiguity function
WVD Wigner-Ville distribution
ZAM Zhao-Atlas-Marks distribution) Platform: |
Size: 306176 |
Author:fisher86 |
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Search - phase amplitude frequency modulation matlab