How can I fix this error?

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Kwan Ho NG
Kwan Ho NG on 30 Mar 2021
Commented: Kwan Ho NG on 30 Mar 2021
  2 Comments
James Tursa
James Tursa on 30 Mar 2021
In the future, always post your code as text highlighted by the CODE button. Do not post your code as images because we can't copy & run pictures.
Kwan Ho NG
Kwan Ho NG on 30 Mar 2021
clear;
fs=10^4;
fc=1000; %carrier frequency
T=16*(1/500); %1/500 is the bit duration; 16bits data
Ts=1/fs; %Ts is the sampling duration for a given frequency = 0.0001s
N=T/Ts; %total number of samples for the 16 bit data
sin_wave= sin(2*pi*fc*(0:Ts:(N-1)*Ts));
cos_wave= cos(2*pi*fc*(0:Ts:(N-1)*Ts));
Ns=40;
data_I=[1 1 1 1 1 -1 1 -1];
data_Q=[-1 -1 1 1 -1 1 -1 -1];
sum_unm=8;
for i=1:sum_unm
for j=1:Ns
data_I_exit((i-1)*Ns+j))=data_I(i);
data_Q_exit((i-1)*Ns+j))=data_Q(i);
end;
end;
for i=1:N
out_QPSK(i)=data_I_exit(i)*cos_wave(i)+data_I_exit(i)+cos_wave(i);
end;
x=0:Ts:T-Ts
plot(x,out_QPSK)

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Answers (1)

James Tursa
James Tursa on 30 Mar 2021
Delete the extra closing parentheses. I.e., delete the paren where the red underline is.

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