Abstract
Receive transformations for diversity based MIMO systems under multi-user interference and correlated fading are studied. We derive the maximum-SINR based receive transformation (MSRT), which maximizes the symbol-wise SINR of the MIMO receiver, for maximizing the achievable capacity of the diversity scheme. We further derive the achievable capacities for the matched filtering (MF) based STBC (space time block code), the MSRT based STBC and the MMSE based STBC under multi-user interference. Analytical results and simulation results both show that the MSRT based STBC results in significant gains of achievable capacity under multi-user interference and correlated fading. Moreover, analytical results and simulation results both show that correlated fading does not make impact on the achievable capacity of the MF based STBC while the achievable capacity of the MSRT based STBC increases with the correlations of correlated fading.
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