is wavelet transform is done before or after fft?

i am processing a human vital sign data obtained from doppler radar at 1 Ghz. i want to use wavelet transform for the detection of heartbeat and respiration rate. the same can be done by fft also. can we use both fft and wavelet transform together to find out the heartbeat and respiration rate? if yes, then which transform is done first? and how do we interpret the wavelet transformed signal?

[guocheng yang]

hi, i am also learning how to processing a human vital sign. it is difficult to find some related codes. so, would you share some codes or data? Thank you very much. my email: [e-mail]

[Trishita Ghosh Troyee]

I am working on human body signals and facing difficulties regarding processing parts. would you please share your exprience or basic codes. mail: [e-mail]