Needed SNR , PSNR, MSE, PSD matlab code for a ECG signal to recognize reconstructed ECG signal

Hello sir,

I am looking for a solution of SNR , PSNR, MSE, PSD analysis of ecg signal. the signal frequency is 360Hz.

Help me to find out the solution

Thank in advance

Answer 1

[Thiago Henrique Gomes Lobato]

You can use the periodogram function from matab.

[Babu Biswas]

clc;

close all;

load('100m.mat'); %100.m data from physionet

ECG = (val-0)/200;

plot(ECG);

axis([0 3600 -1 1]);

xlabel('Samples');

ylabel(' Electrical Activity ');

title( 'Heart beat' );

hold on;

%heart beat detction of the ECG signal

% plot(ECG, 'ro');

fs = 360; %sampling frequency

t = (0:length(ECG)-1)/fs; %time period(total sample/Fs )

plot(t,ECG);

legend('ECG Signal');

%figure(); %Time domain ploting

% subplot(2,2,1);

plot(t,ECG);

legend('ECG Signal');

%axis([0 4 -1 1]);

grid on;

xlabel(' Time [s] ');

ylabel(' Amplitude [mV] ');

title(' An Original ECG Signal '); %Time domain ploting

%figure()

t = 0:0.001:1-0.001;

x = ECG;

periodogram(x,[],L,fs,'centered')

whta is the error here? I cant understand

[Thiago Henrique Gomes Lobato]

In your code you haven't defined L, so it gives an error. Just give a reasonable value for it and it should run

x = ECG;
L = 512;
periodogram(x,[],L,fs,'centered')

[Babu Biswas]

Thanks but I need code according to the equation.