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Amplitude modulation and its demodulation to get back the original signal in simulink
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Amplitude modulation and demodulation study
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tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis
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Quadrature Amplitude Modulation (QAM)
The creation of symbols that are some combination of amplitude and phase can carry the concept of transmitting more bits per symbol further. This method is called quadrature amplitude modulation (QAM). For
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Introduction
This section builds an example step-by-step to give you a first look at the Communications System Toolbox™ software. This section also shows how Communications System Toolbox functionalities build upon the computational and visual
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Introduction
This section builds an example step-by-step to give you a first look at the Communications System Toolbox™ software. This section also shows how Communications System Toolbox functionalities build upon the computational and visual
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analog modulation techniques are:
Amplitude modulation (AM) (here the amplitude of the carrier signal is varied in accordance to the instan eous amplitude of the modulating signal)
Double-sideband modulation (DSB)
Double-sideband modulati
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frequency division multiplexing (OFDM) is used extensively in broadband wired and wireless communication systems because it is an effective solution to intersymbol interference (ISI) caused by a dispersive channel. This becomes increasingly important
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filter bank multicarrier modulation based on the lapped transform with complex emitted signal and real input data (Pulse amplitude modulation-PAM)
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Simple amplitude modulation in matlab
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Implementation of Amplitude modulation using open source gnu radio (gnu radio plus python files).
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Implementation of double side band suppress carrier, single band suppress carrier, conventional amplitude modulation in open source GNU radio (gnu radio companion and python files)
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mimo ofdm for multipath fading channels mimo ofdm fo r multipath fading channels - mimo ofdm for multipath fading channels mimo ofdm for multipath fading channels mimo ofdm for multipath fading channels
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调幅技术远比调频技术及数位广播技术简单,而且,广播也是现代社会不可缺少的一部分。所以，本文使用MATLAB软件下的Simulink对调幅广播进行建模与仿真。首先，介绍该课题研究的背景、目的、意义以及工作内容等。然后，在简要介绍MATLAB及Simulink的建模环境与仿真环境的基础上，通过对AM信号的调制与解调，对调幅广播系统系进行了仿真和分析，得出具体的仿真模型，并对仿真波形进行分析说明。最后，给出结论并提出好的改进方法。针对搭建的广播系统信噪比增益非常小，为了提高发射效率，采用另外一种幅度调
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Offset Quadrature Amplitude Modulation on Orthogonal Division Multiplexing
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2 Point Quadrature Amplitude Modulation
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amplitude modulation scheme in wireless communication
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Quadrature Amplitude Modulation demodulation
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基于OQAM/PDM CO-OFDM系统提出了一种时域的信道估计方法，可以有效提高估计效率。
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产生一个高斯白噪声
利用MATLAB自带的fir1函数产生一个低通滤波器，限制高斯白噪声的带宽，由此产生了视频噪声。
利用产生的视频噪声，分别代入噪声调幅干扰的时域表达式，并且进行100次的积累后求平均值，对其进行快速傅里叶变换后，由此画出噪声调幅干扰的频域波形。
重复上述步骤，分别代入噪声调频干扰与噪声调相干扰的时域表达式，分别画出其频域波形与时域波形。(Generate a Gauss white noise
The fir1 function of MATLAB is used to ge
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