An Interference-Aware Precoding Scheme with Other-Cell Interference for Downlink Multi-User MIMO Channel

Multiuser Generalized Eigenmode Transmission (MGET) is a linear precoding technique that enhances the signal-to-leakage-plus-noise (SLNR) scheme. While SLNR neglects other-cell interference, limiting cell-edge performance, MGET addresses this with an interference-aware design. It uses a whitening filter for receiver interference suppression and a novel precoder based on the interference-plus-noise covariance matrix at the transmitter. Numerical results show MGET outperforms traditional block diagonalization (BD) in reasonable SINR regimes.