Lattice-Reduction-Aided Equalization for MIMO-FBMC Systems

Rostom Zakaria (1) , Danilo Silva (2) , Didier Le Ruyet (1)

1 CEDRIC - LAETITIA - CEDRIC. Traitement du signal et architectures électroniques
2 UFSC - Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis]

In this paper, we propose to use 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 the 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.

Keywords: FBMC/OQAM; Filter-bank; Spatial Multiplexing; MIMO; Spatial Multiplexing.; Lattice reduction

Domains: Engineering Sciences [physics]; Signal and Image processing

Rostom Zakaria, Danilo Silva, Didier Le Ruyet. Lattice-Reduction-Aided Equalization for MIMO-FBMC Systems. IEEE Wireless Communications Letters, 2019, 8 (1), pp.101-104. ⟨10.1109/LWC.2018.2859942⟩. ⟨hal-02470187⟩