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High Performance Semi-blind Time-frequency Domain Tracking Algorithm Suitable for MPSK-OFDM

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4 Author(s)
Li Wei ; Inst. of Commun. Eng., PLA Univ. of Sci. & Tech., Nanjing ; Youyun Xu ; Yueming Cai ; Xiaofei Pan

This paper presents a semi-blind tracking algorithm used for MPSK-OFDM. By using special pilots to assist the decision of a feedback loop and to solve the problem of phase ambiguity, the tracking performance of the algorithm has been improved greatly. Only a few pilots are needed in the algorithm since the pilots are not used to estimate the frequency offset but used to provide the variation information of the phase due to the presence of frequency offset. Simulations verify that the algorithm has low SNR bound for tracking as well as high tracking accuracy and the tracking range is expanded to 30% of one subcarrier spacing

Published in:

Signal Processing, 2006 8th International Conference on  (Volume:3 )

Date of Conference:

16-20 2006