Simplified ML detection scheme for MIMO systems

In this paper, we propose a simplified Maximum Likelihood (ML) detection scheme based on multi-stage likelihood test for MIMO systems. The proposed scheme chooses several surviving symbol combinations at each stage by likelihood tests for the restricted sub-streams, feeds them to the next stage, and finally detects whole sub-streams at the last stage. According to simulation results, the proposed scheme can achieve almost the same performance as that of the ML detection scheme with far less complexity.