[matlab] matlab simulates digital baseband transmission system - digital baseband transmission system

Catalog

1、 Digital baseband transmission system

2、 wave form

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1、 Digital baseband transmission system

clear all;
clc;
N_sample = 8; % Sampling points per symbol 
N = 1000; % Number of symbols 
Ts = 1; % Duration of each symbol 
dt = Ts/N_sample; % Sampling interval 
t = 0:dt:(N*N_sample-1)*dt;
T = N*N_sample*dt;
% Generate a unipolar sequence 
d = (sign( randn(1,N) ) + 1)/2;
data = sigexpand(d,N_sample); % Insert  N_sample-1  individual  0
% Generate unipolar waveform 
gt1 = ones(1,N_sample); %NRZ  Non return to zero waveform 
gt2 = [ones(1,N_sample/2), zeros(1,N_sample/2)];%RZ  Zeroing waveform 
st1 = conv(data,gt1);
st