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Pre-Processed Recursive Lattice Reduction for Complexity Reduction in Spatially and Temporally Correlated MIMO Channels
Chan-ho AN Janghoon YANG Seunghun JANG Dong Ku KIM
Publication
IEICE TRANSACTIONS on Communications
Vol.E92-B
No.4
pp.1392-1396 Publication Date: 2009/04/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.1392 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: pre-processed lattice reduction (PLR), recursive lattice reduction (RLR), pre-processed RLR (PRLR),
Full Text: PDF(275.6KB)>>
Summary:
In this letter, a pre-processed lattice reduction (PLR) scheme is developed for the lattice reduction aided (LRA) detection of multiple input multiple-output (MIMO) systems in spatially correlated channel. The PLR computes the LLL-reduced matrix of the equivalent matrix, which is the product of the present channel matrix and unimodular transformation matrix for LR of spatial correlation matrix, rather than the present channel matrix itself. In conjunction with PLR followed by recursive lattice reduction (RLR) scheme [7], pre-processed RLR (PRLR) is shown to efficiently carry out the LR of the channel matrix, especially for the burst packet message in spatially and temporally correlated channel while matching the performance of conventional LRA detection.
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