Description: 本程序可以对一个模拟信号进行数字化，使用的是PCM即脉冲编码调制，其结果是将样值转化为8位PCM编码。现今语音编码大多数采用这类编码方法-This procedure can be an analog signal to digital, using pulse code modulation or PCM, and the result is kind of value will be translated into eight PCM coding. Most of the current speech coding to adopt this type of coding method Platform: |
Size: 2048 |
Author:徐健 |
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Description: 模拟滤波器，用M文件实现，可以做函数使用。有低通滤波器和高通滤波器，带通，带阻。-Analog filters, with M files to achieve, can be done using the function. There are low-pass filter and high-pass filter, band-pass, band-stop. Platform: |
Size: 7168 |
Author:eachgear |
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Description: 脉冲编码调制（PCM）用于在数字传输媒体上传送模拟信号，在PCM中，首先对模拟信号以高于其带宽两倍的奈奎斯特率进行采样，然后对所得样本进行量化。采用不同量化级别生成的PCM编码会影响接收器重建模拟信号的质量。 -Pulse code modulation (PCM) for the media in the digital transmission of analog signal transmission in the PCM, the first analog signal to more than the Nyquist rate of twice the bandwidth sample, and then to quantify the samples. Using different quantization level generated PCM coding receiver will affect the quality of the reconstruction of analog signals. Platform: |
Size: 1024 |
Author:jack |
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Description: Implementing quadrature modulation and demodulation of analog signals in digital signal processing, using MATLAB Platform: |
Size: 10240 |
Author:song |
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Description: 这里是课程设计时做的一个MATLAB-SIMULINK环境下OFDM的仿真源程序，采用16QAM的子载波调制系统，高斯模拟信道，有误码率分析以及星座图，希望对大家有所帮助-Here is a program designed to do a MATLAB-SIMULINK environment, OFDM simulation source code, using 16QAM subcarrier modulation system, Gaussian analog channel, with bit error rate analysis and the constellation, we want to help Platform: |
Size: 11264 |
Author:苏鹏 |
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Description: generation of wideband high dynamic range analog signal for area-efficient MADBIST, especially for the on-chip testing of wireless communication IF digitizing sigma–delta modulator chip. Via increasing the order of the one-bit bandpass sigma–delta modulation algorithm up to 12 and using finite repetitious bitstream approximating scheme, it can achieve great improvements in signal bandwidth instead of purity at the cost of very little hardware overhead. Another contribution in this work is to provide the theoretical analysis of the reconstructed signal degradation due to harmonic distortion and clock jitter. Such on-chip analog stimulus generation scheme is especially fit for IF digitizing bandpass sigma–delta modulator chip s production-time testing and in-the-field diagnostics. The technique can also be extended to mixed-signal communication SoC built-in-self-test.- generation of wideband and high dynamic range analog signal for area-efficient MADBIST, especially for the on-chip testing of wireless communication IF digitizing sigma–delta modulator chip. Via increasing the order of the one-bit bandpass sigma–delta modulation algorithm up to 12 and using finite repetitious bitstream approximating scheme, it can achieve great improvements in signal bandwidth instead of purity at the cost of very little hardware overhead. Another contribution in this work is to provide the theoretical analysis of the reconstructed signal degradation due to harmonic distortion and clock jitter. Such on-chip analog stimulus generation scheme is especially fit for IF digitizing bandpass sigma–delta modulator chip s production-time testing and in-the-field diagnostics. The technique can also be extended to mixed-signal communication SoC built-in-self-test. Platform: |
Size: 5120 |
Author:Nupur Naik |
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Description: 利用Matlab仿真脉冲编码调制（PCM）及A律、μ律PCM对声音进行压缩编解码过程。
脉冲编码调制（PCM，Pulse Code Modulation）是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看，量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合，编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码，符合长途电话质量。根据量化方法的不同，PCM可分为均匀量化PCM和对数PCM两大类，对数PCM中，2Aμ律和律编码都已被定为国际标准。-Matlab simulation using pulse code modulation (PCM) and the A law, μ law PCM codec for voice compression process.
Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding. The role of the encoder waveform is sampled signal sample quantization and coding. From the mathematical point of view, the process is to quantify the magnitude of the value of a continuous set of infinite number of maps into a finite number of discrete set of amplitude values , encoding is to use a set of binary digits, said after a limited number of these maps. By folding the International Standardization of PCM binary code, in line with long-distance telephone quality. According to the different quantitative methods, PCM can be divided into uniform quantization PCM PCM and the number of two categories, on the number of PCM in, 2Aμ law and legal codes have been designated as international standards. Platform: |
Size: 954368 |
Author:tanii |
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Description: 1 采用正弦波，方波进行同步调制，实现调制信号、已调信号、解调信号的波形、频谱以及解调器输入输出信噪比的关系。
2 采用Verilog语言编写有符号的五位乘法器
3 实现数字与模拟调制-A sine wave, square wave synchronous modulation to achieve the modulation signal, the modulated signal, the demodulated signal waveform, spectrum and signal to noise ratio of the demodulator input and output relationship. 2 using Verilog language has signed five digital and analog multiplier 3 modulation Platform: |
Size: 559104 |
Author:许学真 |
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Description: 利用matlab软件设计并仿真下面的无线通信系统。模拟信源为单音频信号。模拟调制方式为DSB。信道为多径信道（仿真中2径），信道中噪声为加性高斯白噪声。采用相干解调接收。画出了解调器输出端性能曲线与点信噪比SNR的关系。
-Software design and simulation using matlab the following wireless communication systems. A single analog audio signal source. Analog modulation of DSB. Channel multi-path channel (simulation 2 diameter), channel noise is additive white Gaussian noise. The use of coherent demodulation receiver. Draw the output of the demodulation performance curve and the point of the relationship between signal to noise ratio SNR. Platform: |
Size: 1024 |
Author:马友华 |
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Description: 利用matlab软件设计并仿真下面的无线通信系统。模拟信源为单音频信号。模拟调制方式为ASK。信道为多径信道（仿真中2径），信道中噪声为加性高斯白噪声。采用相干解调接收。画出了解调器输出端性能曲线与点信噪比SNR的关系。-Software design and simulation using matlab the following wireless communication systems. A single analog audio signal source. Analog modulation is ASK. Channel multi-path channel (simulation 2 diameter), channel noise is additive white Gaussian noise. The use of coherent demodulation receiver. Draw the output of the demodulation performance curve and the point of the relationship between signal to noise ratio SNR. Platform: |
Size: 1024 |
Author:马友华 |
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Description: 基于matlab函数对模拟信号的调制，可以熟悉的掌握用matlab对模拟信号的调制、解调。-Matlab function-based modulation of the analog signal can be familiar with the master using matlab analog signal modulation, demodulation. Platform: |
Size: 32768 |
Author:chu |
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Description: 非常详细的利用matlab对模拟信号的仿真，每一行程序具有详细说明，并能完美运行-Using matlab very detailed simulation of the analog signal, the program has a detailed description of each line, and the perfect run Platform: |
Size: 60416 |
Author:李松柏 |
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Description: The MATLAB code models a chain of transmission of an analog signal using FM modulation.
1-modulation
signal_informatif ----> integrator ----> modulateurFM ---> modulated signal
2-demodulation
modulated signal ---> differentiator -> rectifier -> fitrepasbas ---> DC component elimination
the average DC component of the signal is removed in descriminant Platform: |
Size: 1024 |
Author:aymen |
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Description: In this post, we will derive the theoretical equation for bit error rate (BER) with Binary Phase Shift Keying (BPSK) modulation scheme in Additive White Gaussian Noise (AWGN) channel. The BER results obtained using Matlab/Octave simulation scripts show good agreement with the derived theoretical results.
With Binary Phase Shift Keying (BPSK), the binary digits 1 and 0 maybe represented by the analog levels and respectively. The system model is as shown in the Figure below.-In this post, we will derive the theoretical equation for bit error rate (BER) with Binary Phase Shift Keying (BPSK) modulation scheme in Additive White Gaussian Noise (AWGN) channel. The BER results obtained using Matlab/Octave simulation scripts show good agreement with the derived theoretical results.
With Binary Phase Shift Keying (BPSK), the binary digits 1 and 0 maybe represented by the analog levels and respectively. The system model is as shown in the Figure below. Platform: |
Size: 430080 |
Author:afin |
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Description: 利用matlab simulink产生两路模拟语音信号，经过pcm编码、时分复用、DPSK调制经过同一个信道单向传输到对应的接收端。常用的三个模块 simulink、通信模块、信号处理模块。包括课程设计报告。-Using matlab simulink produce two analog voice signals through the pcm encoding, time division multiplexing, DPSK modulation over the same one-way transmission channel to a corresponding receiver. The three modules used simulink, communication module, a signal processing module. Including curriculum design report. Platform: |
Size: 459776 |
Author:Alex_wucr |
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Description: 抑制载波型差分相位调制，使用高阶累积量对MPSK信号进行调制识别，独立成分分析算法降低原始数据噪声，使用matlab实现智能预测控制算法，随机调制信号下的模拟ppm。- Suppressed carrier type differential phase modulation, Using high-order cumulants of MPSK signal modulation recognition, Independent component analysis algorithm reduces the raw data noise, Use matlab intelligent predictive control algorithm, Random ppm modulated analog signal unde. Platform: |
Size: 8192 |
Author:wabpjcmaz |
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Description: 使用高阶累积量对MPSK信号进行调制识别，用于时频分析算法，代码里有很完整的注释和解释，实现了对10个数字音的识别，一种流形学习算法（很好用），随机调制信号下的模拟ppm，关于小波的matlab复合分析，利用贝叶斯原理估计混合logit模型的参数。- Using high-order cumulants of MPSK signal modulation recognition, For time-frequency analysis algorithm, Code, there are very complete notes and explanations To achieve the recognition of 10 digital sound, A fluid manifold learning algorithm (good use), Random ppm modulated analog signal under Matlab wavelet analysis on complex, Bayesian parameter estimation principle mixed logit model. Platform: |
Size: 5120 |
Author:aketm |
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Description: LCMV优化设计阵列处理信号，已调制信号计算其普相关密度，包括调制，解调，信噪比计算，MIMO OFDM matlab仿真,正确率可以达到98％，模拟数据分析处理的过程，使用matlab实现智能预测控制算法，用MATLAB实现的压缩传感。- LCMV optimization design array signal processing, Modulated signals to calculate its density Pu-related, Includes the modulation, demodulation, signal to noise ratio calculation, MIMO OFDM matlab simulation, Accuracy can reach 98 , Analog data analysis processing, Use matlab intelligent predictive control algorithm, Using MATLAB compressed sensing. Platform: |
Size: 5120 |
Author:zzvqr |
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Description: 基于人工神经网络的常用数字信号调制，采用加权网络中节点强度和权重都是幂率分布的模型，用MATLAB实现动态聚类或迭代自组织数据分析，模拟数据分析处理的过程，采用了小波去噪的思想，进行逐步线性回归，MIMO OFDM matlab仿真,包含位置式PID算法、积分分离式PID。- The commonly used digital signal modulation based on artificial neural network, Using weighted model nodes in the network strength and weight are power law distribution, Using MATLAB dynamic clustering or iterative self-organizing data analysis, Analog data analysis processing, Using wavelet denoising thought, Stepwise linear regression, MIMO OFDM matlab simulation, It contains positional PID algorithm, integral separate PID. Platform: |
Size: 7168 |
Author:ethbk |
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Description: 此程序实现了AWGN信道下的模拟调制解调，用的是matlab平台(This program implements the analog modulation and demodulation under the AWGN channel, using the MATLAB platform.) Platform: |
Size: 3072 |
Author:老牛99 |
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Search - analog modulation using matlab