Robust Timing Synchronization for Multicarrier Systems Based on RST Invariance

In this paper, a blind robust timing synchronization method, based on invariance properties and cyclostationarity, for multicarrier systems such as Orthogonal Frequency Division Multiplexing (OFDM) is proposed and evaluated. Its results outperform the state-of-the-art for blind methods, specially in hard wireless channels where our proposal is highly superior. It even surpasses the performance of most of non-blind (pilot-aided) methods, while at the same time, it gets the advantages of energy and bandwidth saving of blind proposals. Moreover, since this technique does not require the use of pilots, it can be easily applied to either packet-based or broadcasting systems.

[1]  Donald C. Cox,et al.  Robust frequency and timing synchronization for OFDM , 1997, IEEE Trans. Commun..

[2]  Charalampos Tsimenidis,et al.  Efficient OFDM Symbol Timing Estimator Using Power Difference Measurements , 2012, IEEE Transactions on Vehicular Technology.

[3]  Fernando Pérez-González,et al.  Analysis of pilot-based synchronization algorithms for watermarking of still images , 2002, Signal Process. Image Commun..

[4]  Per Ola Börjesson,et al.  ML estimation of time and frequency offset in OFDM systems , 1997, IEEE Trans. Signal Process..

[5]  S.H. Muller-Weinfurtner.  On the optimality of metrics for coarse frame synchronization in OFDM: a comparison , 1998, Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (Cat. No.98TH8361).

[6]  Daesik Hong,et al.  A novel timing estimation method for OFDM systems , 2002, Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE.

[7]  Xiaohu You,et al.  A Novel Timing Synchronization Method for OFDM Systems , 2010, IEEE Communications Letters.

[8]  J.M. Paez-Borrallo,et al.  A new time-frequency synchronization scheme for OFDM-TDMA systems , 1999, 1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363).

[9]  Vijay K. Bhargava,et al.  On timing offset estimation for OFDM systems , 2000, IEEE Communications Letters.

[10]  Ramjee Prasad,et al.  OFDM for Wireless Multimedia Communications , 1999 .

[11]  Abdulmotaleb El-Saddik,et al.  A Survey of RST Invariant Image Watermarking Algorithms , 2006, 2006 Canadian Conference on Electrical and Computer Engineering.

[12]  Miao Shi,et al.  Revisiting the timing and frequency offset estimation based on cyclostationarity with new improved method , 2009, IEEE Communications Letters.