Mobility

Making Multiuser MIMO Work for LTE

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Executive Summary

Underlining the viability of Multi-User (MU) MIMO for future wireless communications as Long Term Evolution (LTE), the authors propose in this paper a pre-coding strategy based on the low resolution LTE pre-coders 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.

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