In a clinical environment respiration signal is normally extracted from the ECG

recording using digital signal processing techniques. An ECG signal segment is

shown in Figure $1.$

In this project, you have an attached ECG signal $$ECGData$.$mat$.$ You

are required to upload your signal to Matlab and implement the following

functionalities:

A$.$ Detect the QRS complex of the ECG signal

B$.$ Calculate the heart rate of the signal

C$.$ Calculate the respiration rate

D$.$ Calculate the heart rate variability $($optional$)$

In this project you need to design a DSP system in Matlab that correctly detects

the required above parameters. For this you need to create a function in Matlab

$$QRSDetector$$ that will detect the QRS complex of the ECG waveform. The input to

the function is ECGData signal that may include several ECG cycles. The provided

ECG data is sampled at $500$ Hz$.$