Why does this code give error?

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Sadiq Akbar
Sadiq Akbar 2021-5-4
评论： Sadiq Akbar 2021-5-4
clear all
close all
N=100;
fc=1.0e9;
fs=20*fc;
w=2*pi*fc/fs;
n=0:N-1;
s=sqrt(1.0)*exp(i*w*n);
wn=sqrt(0.1/2)*(randn(1,N)+i*randn(1,N));
x=s+wn;
w_est=0;
M=N;
for m=1:M-1
w_est=w_est+(1/(M-1))*arg((x(m))'*x(m+1));
end
error_1=w-w_est;
w_est=0;
M=N;
for m=1:M-1
p(m)=6*(m)*(M-m)/(M*(M^2-1));
w_est=w_est+p(m)*arg((x(m))'*x(m+1));
end
error_2=w-w_est;

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采纳的回答

DGM
DGM 2021-5-4
Use angle() instead of arg() to get the argument of complex numbers.

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