Novel frame synchronization of OFDM scheme for high-speed power line communication systems

Frame synchronization is an critical factor for an effective operation of OFDM(orthogonal frequency division multiplexing) schemes. In this paper, we propose and analyze an efficient frame synchronization method based on m-sequence of OFDM format for high-speed power line communication systems. Repeated m-sequence is superimposed directly to OFDM frames in the time domain. By utilizing the autocorrelation characteristics of m-sequence, efficient frame synchronization can be achieved without imposing additional complexity. And we also consider frequency offset estimation of OFDM schemes. Both theoretical and simulated results are presented to verify the proposed frame synchronization method. The proposed technique can be applied to design of OFDM-based high speed powerline communication systems.

[1]  S.-G. Haggman,et al.  Sensitivity to Doppler shift and carrier frequency errors in OFDM systems-the consequences and solutions , 1996, Proceedings of Vehicular Technology Conference - VTC.

[2]  M. Z. Wang,et al.  A novel OFDM frame synchronization scheme , 2002, IEEE 2002 International Conference on Communications, Circuits and Systems and West Sino Expositions.

[3]  M. Sandell,et al.  Low-complex frame synchronization in OFDM systems , 1995, Proceedings of ICUPC '95 - 4th IEEE International Conference on Universal Personal Communications.

[4]  W. C. Jakes,et al.  Microwave Mobile Communications , 1974 .

[5]  Paul H. Moose,et al.  A technique for orthogonal frequency division multiplexing frequency offset correction , 1994, IEEE Trans. Commun..

[6]  H. Vincent Poor,et al.  Parameter estimation for Middleton Class A interference processes , 1989, IEEE Trans. Commun..

[7]  O. Edfors,et al.  Time and frequency synchronization for OFDM using PN-sequence preambles , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[8]  Damien Castelain,et al.  Digital sound broadcasting to mobile receivers , 1989 .

[9]  H. Vincent Poor,et al.  Recursive algorithms for identification of impulsive noise channels , 1990, IEEE Trans. Inf. Theory.

[10]  George A. Wright,et al.  Nonparametric density estimation and detection in impulsive interference channels. II. Detectors , 1994, IEEE Trans. Commun..

[11]  George A. Wright,et al.  Nonparametric density estimation and detection in impulsive interference channels. I. Estimators , 1994, IEEE Trans. Commun..