Interference-Aware Receiver Structure for Multi-User MIMO and LTE
In this paper, the authors propose a novel low-complexity interference-aware receiver structure for multi-user MIMO which is based on the exploitation of the structure of residual interference. They show that multi-user MIMO can deliver its promised gains in modern wireless systems in spite of the limited CSIT only if users resort to intelligent interference-aware detection rather than the conventional single-user detection. As an example, they focus on the Long Term Evolution (LTE) system and look at the two important characteristics of the LTE precoders, i.e. their low resolution and their applying Equal Gain Transmission (EGT). They show that EGT is characterized by full diversity in the single-user MIMO transmission but it loses diversity in the case of multi-user MIMO transmission.