Carrier Recovery Based on Correlation Technique
Aiqun Hu · 2000
This paper presents a new method for carrier recovery in a direct sequence (DS) code division multi-access (CDMA) receiver. The data demodulation scheme used is multiple phase shift keying (MPSK). The proposed scheme employs two balanced X-correlators to form a frequency discriminator. Theoretical analysis indicates that the proposed method has a tracking range that doubles the symbol rate, and the tracking range is independent of the keying phase number of the MPSK modulation.