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Blockwise-Lattice-Reduction-Aided Tomlinson–Harashima Precoder Designs for MU-MIMO Downlink Communications With Clusters of Correlated Users.
- Source :
- IEEE Transactions on Vehicular Technology; Mar2014, Vol. 63 Issue 3, p1146-1159, 14p
- Publication Year :
- 2014
-
Abstract
- This paper presents a new class of precoder designs, namely, blockwise-lattice-reduction-aided Tomlinson–Harashima precoders (BLR-aided THPs), for multiuser multiple-input–multiple-output (MU-MIMO) downlink communications in the presence of clusters (CLs) of correlated channels. By combining the techniques of leakage-based preprocessing and lattice reduction (LR), the proposed BLR-aided THPs decompose the computationally intensive LR procedure into multiple subprocedures, resulting in reduced complexity. A number of precoder designs along with a computationally efficient intercluster ordering algorithm have been proposed. Complexity analysis and simulation results show that the proposed BLR-aided THP designs stand out as useful alternatives in balancing the tradeoffs between complexity and performance in the considered scenario. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189545
- Volume :
- 63
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Vehicular Technology
- Publication Type :
- Academic Journal
- Accession number :
- 94957076
- Full Text :
- https://doi.org/10.1109/TVT.2013.2284530