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

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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

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Accepted Answer

Thiago Henrique Gomes Lobato
You can use the periodogram function from matab.

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Babu Biswas
Babu Biswas on 16 Feb 2020
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')

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