Amplitude modulation (AM) is a linear baseband modulation technique in which the message modulates the amplitude of a constant frequency signal. Communications Toolbox™ software includes these modulation and demodulation functions, System objects, and blocks to model pulse amplitude modulation (PAM) ...
This MATLAB function returns a demodulated signal z, given the input amplitude modulated (AM) signal y, where the carrier signal has frequency Fc.
Amplitude and phase modulation is a linear baseband modulation technique in which the message modulates the amplitude and phase of a constant frequency signal. Two carrier signals of the same frequency are out of phase with each other by 90°, a condition known as orthogonality or quadrature. The...
amplitude modulationdemodulationIn accordance with the basic composition of communication system,the Matlab/Simulink software was applied to model the analog ... Y Gao,H Feng,S Zhang,... - 《Modern Electronics Technique》 被引量: 1发表: 2013年 Analysis of modulation and demodulation mode of voice...
The MATLAB function berawgn() can be used to calculate the theoretical BER of various modulation and demodulation methods. The chapter then compares the BER graphs obtained through simulation with the theoretical BER, describes the conversion of the pulse-shaped QAM signal into an electrical signal,...
1% MATLAB scriptforIllustrative Problem3.7.2% Demonstration scriptforLSSB-AM demodulation. The message signal3%is+1for0< t < t0/3, -2fort0/3< t < 2t0/3, and zero otherwise.4echo on5t0=.15; %signal duration6ts=1/1500; %sampling interval7fc=250; %carrier frequency8fs=1/ts; %samp...
1% MATLAB scriptforIllustrative Problem3.5. 2% Demonstration scriptforDSB-AM demodulation. The message signal3%is+1for0< t < t0/3, -2fort0/3< t < 2t0/3, and zero otherwise.4echo on5t0=.15; %signal duration6ts=1/1500; %sampling interval7fc=250; %carrier frequency8fs=1/ts; %sampl...
2 Demodulation and Detection of QAM Let us assume that a carrier-phase offset is introduced in the transmission of the signal through the channel. In addition, the received signal is corrupted by additive white Gaussian noise. Hence, r(t) may be expressed as ...
The MATLAB function berawgn() can be used to calculate the theoretical BER of various modulation and demodulation methods. The chapter then compares the BER graphs obtained through simulation with the theoretical BER, describes the conversion of the pulse-shaped QAM signal into an electrical signal,...
Demodulated input signal, returned as a scalar, vector, or matrix of integers in the range [0, M–1].Zis of the same length asY. Data Types:double|single Extended Capabilities C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. Version History Introduced before R2006a...