A Novel Demodulation Algorithm for Low-Cost Low-Power IEEE802.15.4 Receiver
Yin Ming · Dianzi qijian · 2008
A novel demodulation algorithm for IEEE 802.15.4/ZigBeeTM low-IF receiver was presented,which was designed for ISM 2.4 GHz band.As a digital phase demodulation,the algorithm adopts phase differentiation,frequency compensation and symbols recovery to directly extract bits stream from phase slope and recover symbols rather than recover each I or Q sequence,resulting in simple structure,low power and low cost.The comparison between traditional Zero Intermediate-Frequency Zero-Crossing Demodulation algorithm(ZIFZCD)and the proposed algorithm was done,showing lower complexity,better Symbol Error Rate(SER)and better Packet Error Rate(PER)in the proposed algorithm,which fulfills the requirements of IEEE 802.15.4/ZigBeeTM standard.