Multistage MIMO approach to interference cancellation

摘要

In this work multistage MIMO equalization and source separation method is adapted to operate as a successive interference cancellation (SIC) scheme to improve the quality of received signal in a high interference environment. In a 3-stage setup, after capturing the signal of interest (SOI), interference is estimated and cancelled at second stage. After cancellation of the interference, the last stage of equalization recaptures the SOI with better quality due to higher SINR at its input signals. We have shown that using this method with successful equalization at the first stage, we are able to achieve approximately 10 dB cancellation gain when interferer is as strong as signal(SIR=0) and SNR is 35 dB. A Rayleigh fading iid channel is used for simulation.