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Quasi-Orthogonal Time-Reversal Space-Time Block Coding for Frequency-Selective Fading Channels.
- Source :
-
IEEE Transactions on Signal Processing . Feb2007, Vol. 55 Issue 2, p772-778. 7p. 4 Graphs. - Publication Year :
- 2007
-
Abstract
- Quasi-orthogonal space-time block codes (QO-STBCs) are a powerful code family designed for more than two transmit antennas. In contrast to their orthogonal counterparts designed for the same number of transmit antennas, QO-STBCs are able to provide full-rate transmission rate. While original QO-STBCs enjoy only a partial diversity, the recently proposed rotated versions of QO-STBCs achieve the maximum diversity order which is equal to the number of transmit antennas. Since QO-STBCs have been originally proposed for frequency-flat fading channels, it is a challenging design problem to apply them over frequency-selective channels. The dispersive nature of such channels results in intersymbol interference which needs to be carefully handled at the receiver. In this paper, we investigate time-domain equalization for QO-STBC, exploiting the embedded quasi-orthogonal structure to design low-complexity receivers. We also present diversity gains for the proposed scheme through pairwise error probability (PEP) derivation and analysis which are further confirmed by Monte Carlo simulations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1053587X
- Volume :
- 55
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Signal Processing
- Publication Type :
- Academic Journal
- Accession number :
- 23964942
- Full Text :
- https://doi.org/10.1109/TSP.2006.885766