Open AccessLattice-Reduction-Aided Equalization for MIMO-FBMC Systems
Author(s) -
Rostom Zakaria,
Danilo Silva,
Didier Le Ruyet
Publication year - 2018
Publication title -
ieee wireless communications letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.23
H-Index - 72
eISSN - 2162-2345
pISSN - 2162-2337
DOI - 10.1109/lwc.2018.2859942
Subject(s) - mimo , lattice reduction , spatial multiplexing , computer science , filter bank , electronic engineering , equalization (audio) , reduction (mathematics) , diversity gain , link adaptation , modulation (music) , antenna diversity , telecommunications , fading , wireless , engineering , decoding methods , beamforming , mathematics , physics , channel (broadcasting) , geometry , acoustics
In this letter, we propose use of a lattice reduction (LR) approach to enhance the performance of spatial multiplexing (SM) multiple-input multiple-output (MIMO) systems using filter-bank multicarrier (FBMC) modulation. It is known that lattice-reduction-aided (LRA) MIMO receivers can achieve full spatial diversity. On the other hand, the presence of intrinsic interference in FBMC is widely regarded as a factor that prevents the system from taking advantage of spatial diversity when combined with SM-MIMO. We will show that with an adequate adaptation to FBMC modulation, the LR approach can be performed in a straightforward manner. Simulation results show that an LRA equalizer allows an FBMC-MIMO system to benefit more from the available spatial diversity and offers an interesting performance gain compared to the existing solutions with reasonable complexity.
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