An subspace-based blind multiuser detection in dispersive CDMA channels

This work investigates the discrete-time MIMO model of the dispersive CDMA channel. Then based on the identified signal subspace parameters and the channel response, two liner detectors that are a zero-forcing detector and a minimize-mean-square-error (MMSE) detector are analyzed. The simulation result shows that the linear MMSE detectors are capable of suppressing both multiple-access interference (MAI) and intersymbol interference (ISI) and the performance of the MMSE detector outperforms the matched filter.