Block spread OFDMA system with space-time coded MIMO over frequency selective fading channels

This paper proposes a block spread orthogonal frequency division multiple access (BS-OFDMA) system with a combined space-time coded multiple-input multiple-out (STC-MIMO) scheme called STC-MIMO BS-OFDMA for transmission over frequency selective fading channels. In this system, a novel block spreading approach is firstly applied to effectively achieve precoding in the OFDMA system with lower complexity for improving the multipath diversity performance. The STC-MIMO is then incorporated to take advantage of the spatial diversity. The signal model and architecture of the proposed system are presented, and simulations are carried out to confirm the expected performance improvement.

[1]  A. Robert Calderbank,et al.  Space-time block coding for wireless communications: performance results , 1999, IEEE J. Sel. Areas Commun..

[2]  Hongwei Yang.  A road to future broadband wireless access: MIMO-OFDM-Based air interface , 2005, IEEE Communications Magazine.

[3]  Wang Yong,et al.  A novel scheme for symbol timing in OFDM WLAN systems , 2004, IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004..

[4]  Arumugam Nallanathan,et al.  Space-time coded MIMO-OFDM for high capacity and high data-rate wireless communication over frequency selective fading channels , 2002, 4th International Workshop on Mobile and Wireless Communications Network.

[5]  Georgios B. Giannakis,et al.  Chip-interleaved block-spread CDMA for the downlink with inter-cell interference and soft hand-off , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[6]  Xianbin Wang,et al.  On the comparison between conventional OFDM and MSE-OFDM systems , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[7]  Georgios B. Giannakis,et al.  Space-time block-coded OFDMA with linear precoding for multirate services , 2002, IEEE Trans. Signal Process..

[8]  Jürgen Lindner,et al.  Diversity comparison of spreading transforms for multicarrier spread spectrum transmission , 2003, IEEE Trans. Commun..

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

[10]  K. V. S. Hari,et al.  Space-time block coded interleaved orthogonal frequency division multiplexing system , 2002, 2002 IEEE International Conference on Personal Wireless Communications.

[11]  Joe F. Chicharo,et al.  STC-MIMO Block Spread OFDM in Frequency Selective Rayleigh Fading Channels , 2006, 11th IEEE Symposium on Computers and Communications (ISCC'06).

[12]  Robert W. Heath,et al.  Receiver designs for Alamouti coded OFDM systems in fast fading channels , 2005, IEEE Transactions on Wireless Communications.

[13]  Michael L. McCloud.  Analysis and design of short block OFDM spreading matrices for use on multipath fading channels , 2005, IEEE Transactions on Communications.

[14]  Marc Moonen,et al.  MUI-free receiver for a synchronous DS-CDMA system based on block spreading in the presence of frequency-selective fading , 2000, IEEE Trans. Signal Process..