The purpose of this design note is to show how the FEC decoding implemented in HW on the CC1100 CC1100E CC1101 CC1110Fx CC1111Fx CC1150 CC2500 CC2510Fx CC2511Fx and CC2550 can be implemented in SW. This is in particular very important for the CC430Fx device which has the same radio as the CC1101 and CC1110/11Fx but without HW FEC included.