ecg wireless transmission using xbee

hi friends i am working on 2 xbee pro rf module .

i am doing project on labview based ecg wireless transmission using xbee.

my problem is that i am getting the ecg wave but not able to stabilize it .

can anybody explain me what are the settings needed to do in xbee to get the stable wave.?

do i need any additional hardware to do that?
like microcontroller ?

thank you…