Doubt with my codings..Pls help me correct it
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
clc;
clear all;
close all;
%input
M=1024;
nt=2;
nr=1;
L=65;
%Generate random data
m=4;
msg1=randint(M/2,1,m);
figure(1)
stem(msg1)
grid on
xlabel('data points')
ylabel('transmitted data phase representation')
title('Transmitted Data "O"')
msg2=randint(M/2,1,m);
figure(2)
stem(msg2)
grid on
xlabel('data points')
ylabel('transmitted data phase representation')
title('Transmitted Data "O"')
% QPSK modulation
qpsk_modulated_data1=pskmod(msg1,m);
qpsk_modulated_data2=pskmod(msg2,m);
%scatterplot(qpsk_modulated_data1);
%title('qpsk modulated transmitted data1');
%scatterplot(qpsk_modulated_data2);
%title('qpsk modulated transmitted data2');
%IFFT
x1=ifft(qpsk_modulated_data1);
x2=ifft(qpsk_modulated_data2);
%scatterplot(x1)
%scatterplot(x2)
x=vertcat(x1,x2);
%Add CP
message = randint(1,M,4); %Assuming QPSK symbols
length_cyclic = 15;
starting =M - length_cyclic + 1;
cyclic_prefix = message(starting : end);
prefixed = horzcat(cyclic_prefix,message);
%channel
h1=gallery('circul',M:M);
h2=gallery('circul',M:M);
e=horzcat(h1,h2);
f=vertcat(h1,h2);
h=e*f;
There is no connection of adding CP with my output. How can I make it correct?
7 commentaires
Réponses (1)
Walter Roberson
le 6 Mar 2012
Your calculation of "h" does not involve any variables defined after your very early "%input" section. Therefore, adding CP has no effect on "h", at least not in the code you have written.
0 commentaires
Voir également
Catégories
En savoir plus sur Install Products dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!