On the value of spatial diversity for the synchronisation in MIMO-OFDM systems

This paper investigates the value of spatial diversity for the synchronisation in MIMO-OFDM systems. A preamble-based synchronisation scheme exploiting the available spatial diversity of a MIMO system is proposed and evaluated by simulation. It is shown that synchronisation becomes significantly more reliable compared to a system where only single antennas are used within the synchronisation process. The largest share of this improvement is achieved by exploiting receive diversity based on maximum ratio combining of the Schmidl-Cox correlation results at each receiving antenna; exploitation of transmit diversity leads to moderate further improvements

[1]  Gordon L. Stüber,et al.  Synchronization for MIMO OFDM systems , 2001, GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270).

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

[3]  Dong-Jo Park,et al.  Hopping pilots for estimation of frequency-offset and multiantenna channels in MIMO OFDM , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[4]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[5]  Geoffrey Ye Li,et al.  Broadband MIMO-OFDM wireless communications , 2004, Proceedings of the IEEE.

[6]  T.C.W. Schenk,et al.  Frequency synchronization for MIMO OFDM wireless LAN systems , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[7]  L. Haring,et al.  Synchronization in MIMO OFDM systems , 2005 .

[8]  A. Czylwik.  Synchronization for systems with antenna diversity , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).