Making multiuser MIMO work for LTE

Underlining the viability of multiuser (MU) MIMO for future wireless communications as long term evolution (LTE), we propose in this paper a precoding strategy based on the low resolution LTE precoders which necessitates 2 bits feedback from the user equipment (UE). The proposed strategy encompasses geometrical interference alignment at eNodeB (LTE notation for base station) followed by the exploitation of interference structure by the UEs. On one hand, this strategy relegates the interference seen by each UE by a geometric scheduling algorithm while on the other hand, UEs exploit the structure of residual interference in the detection process.

• Type: Journal
• Year: 2010
• Where: PIMRC
• Authors: Rizwan Ghaffar, Raymond Knopp
• Keywords: Communications, Geometrical Interference Alignment, Low Resolution Lte, LTE Notation, PIMRC 2010