Properties of robust MIMO detector

Previously, using the Maximum Likelihood (ML) method, we obtained a new Gaussian Multiple-Input Multiple-Output (MIMO) detector which is robust to the correlation between the subarrays [1]. It is found that this new detector has the same statistical properties in the absence of target irregard-less if the subarrays are correlated or not. It becomes the MIMO Optimum Gaussian Detector (OGD) [2, 3] when the subarrays are uncorrelated. In this paper, we define two main configurations, transmit or receive diversity, with varying degree of freedoms (subarrays). Using these configurations, we study the detection performance of this detector and its adaptive version with respect to various parameters.