sine wave and sampling

Hello to everyone,

I want to draw a period of y=sin(x) function and take 10 samples with the same interval among them. Next, to each sample I want to add a random value of noise, which value must come from the Gaussian distribution N(0,1).Could someone help me?

Thanks in advance

[Jan]

What have you tried so far? Which problems did occur?

Answer 1

[Sulaymon Eshkabilov]

The solution of this exercise is relatively simple:

N=40;                    % Size of a signal: resolution of the signal with 10 might be too poor. 
SNR = 10;                % SNR (Signal-to-Noise Ratio) in dB
x = linspace(0,360, N);
F = zeros(size(x)); IN = F;
for ii=1:N
    IN(ii)=sind(x(ii));
    F(ii)=awgn(IN(ii), SNR, 'measured');
end
plot(x, IN, 'r', x, F, 'b-'), grid on