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Combined adaptive lattice reduction-aided detection and antenna shuffling for DSTTD-OFDM systems

Conference Paper


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Abstract


  • In this paper, we consider lattice reduction (LR) aided linear detection in a DSTTD-OFDM (double space-time transmit diversity- orthogonal frequency division multiplexing) system with antenna shuffling. We first derive an antenna shuffling criterion for the LR-aided DSTTD-OFDM system. Next, we propose a combined reduced-feedback and adaptive LR algorithm by exploiting the correlation between OFDM subcarriers in the frequency domain. The LR-aided DSTTD OFDM system with this algorithm requires low computational effort for the LR operation and small feedback information. Simulation results show that a significant improvement could be achieved in the proposed system compared to previous (non-LR-aided) systems under spatially correlated channels. Also, the proposed complexity-reduced approach could greatly lower the system complexity while exhibiting a slight performance loss.

Publication Date


  • 2013

Citation


  • N. Le, L. Chung. Tran & F. Safaei, "Combined adaptive lattice reduction-aided detection and antenna shuffling for DSTTD-OFDM systems," in IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2013), 2013, pp. 100-104.

Scopus Eid


  • 2-s2.0-84885742461

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2539&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1530

Start Page


  • 100

End Page


  • 104

Place Of Publication


  • Germany

Abstract


  • In this paper, we consider lattice reduction (LR) aided linear detection in a DSTTD-OFDM (double space-time transmit diversity- orthogonal frequency division multiplexing) system with antenna shuffling. We first derive an antenna shuffling criterion for the LR-aided DSTTD-OFDM system. Next, we propose a combined reduced-feedback and adaptive LR algorithm by exploiting the correlation between OFDM subcarriers in the frequency domain. The LR-aided DSTTD OFDM system with this algorithm requires low computational effort for the LR operation and small feedback information. Simulation results show that a significant improvement could be achieved in the proposed system compared to previous (non-LR-aided) systems under spatially correlated channels. Also, the proposed complexity-reduced approach could greatly lower the system complexity while exhibiting a slight performance loss.

Publication Date


  • 2013

Citation


  • N. Le, L. Chung. Tran & F. Safaei, "Combined adaptive lattice reduction-aided detection and antenna shuffling for DSTTD-OFDM systems," in IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2013), 2013, pp. 100-104.

Scopus Eid


  • 2-s2.0-84885742461

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2539&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1530

Start Page


  • 100

End Page


  • 104

Place Of Publication


  • Germany