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- W1534823709 abstract "In this paper, the problem of designing a linear precoder for Multiple-Input Multiple-Output (MIMO) systems employing Low-Density Parity-Check (LDPC) codes is addressed under the constraint of independent receiving virtual antenna output groups, thus reducing the relevant transmitter and receiver complexities. Our approach constitutes an interesting generalization of Bit-Interleaved Coded Multiple Beamforming (BICMB) which has shown many benefits in MIMO systems. After examining the properties associated with independent output grouping, we proceed to propose an alternative, practical technique, called Per-Group Precoding (PGP), which groups together multiple input symbol streams and corresponding receiving branches in the “virtual” channel domain (after singular value decomposition of the original MIMO channel), and thus results in independent transmitting/receiving streams between groups. We show with numerical results that PGP offers almost optimal performance, albeit with significant reduction both in the precoder optimization and LDPC EXIT chart based decoding complexities." @default.
- W1534823709 created "2016-06-24" @default.
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- W1534823709 date "2015-04-01" @default.
- W1534823709 modified "2023-10-18" @default.
- W1534823709 title "MIMO linear precoders with reduced complexity" @default.
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- W1534823709 doi "https://doi.org/10.1109/wts.2015.7117243" @default.
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