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Previously, the well-known Optimum Gaussian Detector (OGD) has been extended to the Multiple-Input Multiple-Output (MIMO) case where all transmit-receive subarrays are considered jointly as a system such that only one detection threshold is used. In this extension, all subarrays have been assumed to be widely separated and the transmitted waveforms are assumed to be orthogonal. However, the necessary...
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...
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