A Novel Timing Synchronization Method for MIMO OFDM Systems

Chong Feng, Jianhua Zhang, Yanyan Zhang, Minghua Xia
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
DOI: 10.1109/VETECS.2008.197
Publish Year: 2008

Abstract: This paper presents a timing synchronization method with shift-orthogonal constant amplitude zero auto correlation (CAZAC) sequences for the multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. Utilizing the unique properties of CAZAC sequences, at the receivers, unit pulses can be obtained by the symmetrical correlation to detect time offsets and differentiate inter-transmitter delays (ITDs). The performance of the proposed method is compared with traditional methods at different values of ITDs. Simulations demonstrate that the proposed CAZAC sequence-based method provides high accuracy in detecting the different time offsets caused by the distributed transmitters of the MIMO OFDM systems.

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